Tuesday, November 22, 2011

Tax Levels

From Don Talyor:

If we adopted 21% of GDP as a future target for balancing the budget, we would be saying government spending will be less while the baby boomers are eligible for Medicare and Social Security than it commonly was when they were paying taxes to support these same programs. This will be very hard. Plans seeking balance at lower levels seem implausible.


I think that this is worth keeping in mind. A 21% of GDP budget target would already be a painful and difficult process to achieve with the headwinds we have already due to population aging. Lower levels require a really novel idea about how to reverse these headwinds.

But the options that might really shift the balance (immigration) seem to be out of favor right now.

Sunday, November 20, 2011

Toys for Tots -- reprinted, slightly revised

A good Christmas can do a lot to take the edge off of a bad year both for children and their parents (and a lot of families are having a bad year). It's not too late to pick up a few toys, drop them by the fire station and make some people feel good about themselves during what can be one of the toughest times of the year.

If you're new to the Toys-for-Tots concept, here are the rules I normally use when shopping:

The gifts should be nice enough to sit alone under a tree. The child who gets nothing else should still feel that he or she had a special Christmas. A large stuffed animal, a big metal truck, a large can of Legos with enough pieces to keep up with an active imagination. You can get any of these for around twenty or twenty-five bucks at Target;

Shop smart. The better the deals the more toys can go in your cart;

No batteries. (I'm a strong believer in kid power);*

Speaking of kid power, it's impossible to be sedentary while playing with a basketball;

No toys that need lots of accessories;

For games, you're generally better off going with a classic;

No movie or TV show tie-ins. (This one's kind of a personal quirk and I will make some exceptions like Sesame Street);

Look for something durable. These will have to last;

For smaller children, you really can't beat Fisher Price and PlaySkool. Both companies have mastered the art of coming up with cleverly designed toys that children love and that will stand up to generations of energetic and creative play.

* I'd like to soften this position just bit. It's okay for a toy to use batteries, just not to need them. Fisher Price and PlaySkool have both gotten into the habit of adding lights and sounds to classic toys, but when the batteries die, the toys live on, still powered by the energy of children at play.

The most disgusting image I could come up with in the education reform debate

You can read my thoughts on dismembered puppy math over at Education and Statistics.

Statements that I violently disagree with

From Tyler Cowen via Scott Sumner:

Congratulations to Matt Yglesias on his new gig. He’s arguably the best progressive economist in the blogosphere, which isn’t bad given that he’s not an economist. I said “arguably” because Krugman’s a more talented macroeconomist. But Yglesias can address a much wider variety of policy issues in a very persuasive fashion. So he’s certainly in the top 5. His blog is the best argument for progressive policy that I’ve ever read. (But not quite persuasive enough to convince me.)


Now do not get me wrong: I post a lot about Matt Yglesias because I think that he is a fine thinker and has some really nice points to make. But there is now way he is competitive to be the top progressive economist in the blogosphere. I can't claim to be an expert but, off the top of my head, I have have:

Noah Smith
Paul Krugman
Bradford Delong
Mark Thoma

Plus the Worthwhile Canadian Initiative folks occasionally drift into progressive territory and are always worth reading. And this is just off the top of my head and including blogs I read regularly. Again: the provocative policy thinker with good ideas and a solid grasp of economists label definitely applies to Yglesias. But I find him a very odd choice for #1 given the alternatives. If anything, I find him awfully centrist on economic matters, at times (which, I suppose, could explain the appeal).

Saturday, November 19, 2011

Evaluating evidence

I want to steal a quote from Paul Krugman to illustrate a point:

And in the end, Ryan’s answer is that we need strong economic growth, the kind that we get by cutting taxes on the rich. Because that’s why the Clinton years were an economic disaster and the Bush years so prosperous.


Is this strong evidence?

First of all, we need to consider a number of causal hypotheses:

1) Tax rates on the rich are unrelated to economic growth
2) Higher tax rates on the rich increase economic growth
3) Economic growth makes it easier to tax the rich
4) Higher tax rates on the rich decrease economic growth

Then we need to consider lags between tax policy and changes in economic growth. I am suspicious of anyone who says that this is an easy problem. After all, what we really want (the counterfactual of what would happen if Bush/Clinton not changed tax policy) is completely unavailable.

So what value is this evidence?

It does rule out one very clear talking point in the debate. It suggests that moderate changes in tax policy (Bush Tax cuts) do not have a stronger effect on economic growth than the economic fundamentals do. We may even take this as weak evidence of hypothesis #4 above (with all of the caveats about not being able to make a strong inference).

So the ideas that tax cuts [focused on high income earners] are a good response to short term problems with weak economic growth seems to be contrary to the best evidence available. Nor does looking at period like the 1950' (with very high marginal rates and rapid growth) seem to provide a lot of support for Hypothesis #2.

But if it is case that Hypothesis #2 is true, we know that it is unlikely to overcome other economic issues (or it would have made the Bush years a time of prosperity). Or, in other words, that the overall effect size of this tax policy change is small relative to other factors (if it works in the direction predicted by Hypothesis #2). Now one can reframe this as a moral question, and some do.

But it is worth considering that, in the absence of controlled experiments, how do we update our expectations when a strategy that sounds reasonable doesn't seem to give expected results.

Friday, November 18, 2011

Why aren't you reading the incidental economist?

Because if you care about health care, they are one of the most informative blogs around for those of us in the medical research community.

Consider this statistic:

By 2010, more than 60% of people lived in areas where insurance premiums cost at least 20% of their income. And that’s just premiums; it doesn’t include deductibles, it doesn’t include co-pays, and it doesn’t include co-insurance.

This is likely unsustainable. The growth rate of insurance is far above that of wages, meaning that health care costs are going to consume a higher and higher percent of people’s incomes in the future. Moreover, this is a problem of the non-elderly. Because of Medicare, few elderly have premiums which consume this level of income.


This statistic very nicely frames the entire underlying issue with the explosion in medical costs. Placed in such stark terms, the question shifts from "can we reduce medical costs" to "how are we going to reduce medical costs".

Thursday, November 17, 2011

Hard work

Noah Smith has a couple of interesting posts up, but the one that I really found interesting was "Why conservatives can't get people to work hard". It had several insightful comments including the classic:

One basic idea is that hard work should be rewarded. Obvious, right? I mean, we're supposed to be economists here! People respond to incentives, and they are risk averse. A winner-take-all society is not very conducive to hard work; I'm not going to bust my butt for 30 years for a 1% shot at getting into The 1%. But I am going to bust my butt for 30 years if I think this gives me a 90% chance of having a decent house, a family, some security, a reasonably pleasant job, a dog, and a couple of cars in my garage. An ideal middle-class society is one in which everyone, not just anyone, can get ahead via hard work.


Even more interesting, he points out the underlying ambivalence among conservatives as to whether hard work has a causal link to productivity:

Conservatives, meanwhile, are all too often divided on whether they actually believe that hard work works. Plenty of conservatives have undermined Cowen's hard-work-and-discipline bloc by saying that success in life is all due to natural differences in ability. These "I.Q. conservatives" see inequality as the natural order of things. They have focused on getting people to accept their place in society and learn to live with what they have, rather than strive to move up in the world. This is a very Old British sort of conservatism, a nobility-and-peasants ethos dressed up in the faux modernism of psychometric testing.

Conservatives need to look in the mirror and ask themselves: "Do we really want people to work hard and be disciplined? Or do we just say that in order to keep the peasants from getting restless, when deep down we believe that it's all about good genes?" Because if it's the former, conservatives should do some hard thinking about what actually gets people to work hard. And they should think about how to respond to those among their colleagues for whom it is simply the latter.


I think that the "I.Q. conservatives" (as Noah calls them) are actually a fairly concerning movement. We all know that social structures based on accepting one's lot in life (think feudalism) have shockingly low levels of productivity. A social creed that suggests that this lack of productivity is due to innate personal differences is also one that cannot address any social dysfunction that may be present. After all, if the reason person A is successful is that they are the "right sort of person" then we don't have to handle questions like "why is person B unsuccessful".

A broad adoption of this ethos would be an unfortunate outcome for any society because it then concentrates decision making ability into a more and more restricted class. Democracy and capitalism succeed by making the information base broad. It's not that they always succeed in creating good outcomes. But the track record of a narrow elite making decisions is . . . poor.

Laboratory animals in biomedicine -- a recycled reply

In response to Joseph's recent post on the over-reliance on mice in medical research (which was prompted by this thought-provoking piece in Slate), I thought I'd dredge up something I wrote on the subject last year:

Landscapes and Lab Rats

In this post I discussed gradient searches and the two great curses of the gradient searcher, small local optima and long, circuitous paths. I also mentioned that by making small changes to the landscape being searched (in other words, perturbing it) we could sometimes (with luck) improve our search metrics without significantly changing the size and location of our optima.

The idea that you can use a search on one landscape to find the optima of a similar landscape is the assumption behind more than just perturbing. It is also the basis of all animal testing of treatments for humans. This brings genotype into the landscape discussion, but not in the way it's normally used.

In evolutionary terms, we look at an animal's genotype as a set of coordinates for a vast genetic landscape where 'height' (the fitness function) represents that animal's fitness. Every species is found on that landscape, each clustering around its own local maximum.

Genotype figures in our research landscape, but instead of being the landscape itself, it becomes part of the fitness function. Here's an overly simplified example that might clear things up:

Consider a combination of two drugs. If we use the dosage of each drug as an axis, this gives us something that looks a lot like our first example with drug A being north/south, drug B being east/west and the effect we're measuring being height. In other words, our fitness function has a domain of all points on our AB plane and a range corresponding to the effectiveness of that dosage. Since we expect genetics to affect the subjects react to the drugs, genotype has to be part of that fitness function. If we ran the test on lab rats we would expect a different result than if we tested it on humans but we would hope that the landscapes would be similar (or else there would be no point in using lab rats).

Scientists who use animal testing are acutely aware of the problems of going from one landscape to another. For each system studied, they have spent a great deal of time and effort looking for the test species that functions most like humans. The idea is that if you could find an animal with, say, a liver that functions almost exactly like a human liver, you could do most of your controlled studies of liver disease on that animal and only use humans for the final stages.

As sound and appealing as that idea is, there is another way of looking at this.

On a sufficiently high level with some important caveats, all research can be looked at as a set of gradient searches over a vast multidimensional landscape. With each study, researchers pick a point on the landscape, gather data in the region then use their findings to pick their findings and those of other researchers to pick their next point.

In this context, important similarities between landscapes fall into two distinct categories: those involving the positions and magnitudes of the optima; and those involving the search properties of the landscape. Every point on the landscape corresponds to four search values: a max; the number of steps it will take to reach that max; a min; and the number of steps it will take to reach that min. Since we usually want to go in one direction (let's say maximizing), we can generally reduce that to two values for each point, optima of interest and time to converge.

All of this leads us to an interesting and somewhat counterintuitive conclusion. When searching on one landscape to find the corresponding optimum of another, we are vitally interested in seeing a high degree of correlation between the size and location of the optima but given that similarity between optima, similarity in search statistics is at best unimportant and at worst a serious problem.

The whole point of repeated perturbing then searching of a landscape is to produce a wide range of search statistics. Since we're only keeping the best one, the more variability the better. (Best here would generally be the one where the global optimum is associated with the largest region though time to converge can also be important.)

In animal testing, changing your population of test subjects perturbs the research landscape. So what? How does thinking of research using different test animals change the way that we might approach research? I'll suggest a few possibilities in my next post on the subject.

Wednesday, November 16, 2011

The limitations of laboratory animals in biomedicine

There is a very interesting take in Slate on the reliance of Mouse Models in biomedical science. You can see the temptation in a fast growing animal that elicits limited sympathy from the general public. But the concern with missing key drugs is real -- especially when the diseases in mice operate differently than in humans.

But the real kicker was the discovery that control mice are overfed, under-stimulated and obese. This puts an entirely new spin on studies that restrict caloric intake. They may be saying that eating a normal diet is life enhancing and not caloric restriction. These sorts of blind alleys can have enormous consequences.

Go and read -- it is worth it.

Tuesday, November 15, 2011

How not to convince people

The approach taken by Occupy Seattle here seems to be deeply counter-productive. I think that new ideas and paths forward require us to spend less time in "gumming up process" and more time deciding how to address real problems.

Not a good start for a dynamic movement seeking change.

Tone poem -- how Duncan Black and company missed the big picture

I'd thought about blogging this yesterday, then I decided that too much had been written about Penn State, at least too much by people like me who knew nothing about the subject. I reconsidered when I followed this link from Brad DeLong. DeLong, Black and co. see David Brooks' statements as standard issue liberal bashing, but I think they missed a more significant part of story.

Take a look at this excerpt from All Things Considered:

RAZ: In the just short time we have left, E.J., I want to ask you about Penn State - both of you. Obviously, the university president and the head coach, Joe Paterno, were fired by the board of trustees.

Do you think they should've considered shutting down the program for a year?

DIONNE: Yeah. Well, you look at that indictment, I mean, what happened was hideous. What was done to kids, 10-year-old boy and others that young, was just awful. And you had an institution that seemed more interested in self-protection than anything else. And we've seen that before.

And I understand Joe Paterno is a much-loved figure in sports terms. He was one of the better college coaches. His kids graduated. But this entire episode is so ugly and it, again, you hate institutional protection over the interests of little kids.

RAZ: David.

BROOKS: Yeah, I guess think - it's I have a bigger view, which is that when we have a society where we don't know how to handle the concept of evil when we see it, we don't know how to deal with it, we're not really aware of it and people hid away. I do not think they should shut down the program, however. I think a lot of very honest football players have committed themselves to that program. I don't think they should be punished.


If you've followed any of the major debates going on now, you have to be discouraged by the lack of progress. You will see some good substantive arguments but more often the pundits will simply focus on maintaining the appropriate tone and making the right associations.

David Brooks is a master of this kind of punditry. That skill has allowed him to maintain his reasonable conservative persona under very difficult circumstances (look at what happened to David Frum). See how he hits both notes here, first chastising us for moral relativism then warning against excessive reaction. In terms of tone, this combination of conservative values and measured responses is almost perfect. As an argument, though, it's gibberish.

There is no way to reconcile the two sides here. You can't condemn society for lacking the strength and clarity of vision to deal with evil then recommend that we not punish an institution that tolerated and enabled genuine atrocities. Brooks, who is a very intelligent man, undoubtedly knows what he said makes no sense, but he also knows that, as long as maintains that proper tone, most people won't care.

Monday, November 14, 2011

Cross sectional reasoning

I want to follow up on a post by Bad Astronomy that has been discussed by both Mark and Noah Smith. The post comments on the results of the 2010 census on employment rates:

I highlighted one in particular: Astronomy and Astrophysics. Note that it has a 0% unemployment rate; in other words, last year everyone who majored in these fields got a job! Now, I find myself being a tad skeptical about this, but if there’s some weird thing going on with this survey, I can at least make the broad assumption that the relative job numbers are probably OK. Majoring in astronomy is still a good idea, and will strengthen your chances of getting a job after college.


I want to take this in a different direction. What this metric shows is that, if you were lucky enough to have majored in Astronomy in 2005 then you were very likely to be employed in 2010. It says nothing about what will happen to somebody who enters the program in 2011 and whether they will be employed in 2015.

See, I was actually a physics major in the mid 1990's, in a school with a large astrophysics group. I knew a lot of these students and even took classes with them. Do you know what they mostly ended up as: High School Teachers. Plus a few academics. At the time there was a terrible job placement rate in physics and we were all depressed by the poor employment outcomes. Using the tool, I see a 4.5% unemployment rate for physics, which does make me wonder how many astrophysicists are counted in this group.

But, in general, past performance is no guarantee of future employment. A depressed job market could easily have led to full employment years later, long after only the most dedicated students remained. I've seen this phenomenon in a lot of fields -- people go where the markets signal but, in education, the signals are lagging indicators.

So maybe we are seeing the unemployment ghettos of the future?

Another "It's too late tonight to do it justice..."

Noah Smith has an excellent post on the employment picture for science major with important implications for our ongoing mathematics education debate:

No, a science major does not guarantee you a job...

Sunday, November 13, 2011

I'm not knowledgeable enough to sufficiently mock this* #

DNA Testing Could Help Choose Your Kid's Sport





* Yeah, it's a split infinitive. What are you, the grammar police?

# Now with no words omitted from the title.

Saturday, November 12, 2011

Libertarians in Space

Herman Cain gave a speech to a group of Young Republicans and the subject of the space shuttle came up:
In his speech, Cain praised President John F. Kennedy as a "great leader" for inspiring a national effort to put a man on the moon, a goal achieved when astronaut Neil Armstong stepped onto the moon's surface in 1969.

"He didn't say, 'We might.' He didn't say, 'Let's take a poll,'" Cain said. "He said, 'We will.' And we did. Only for this president to move us back by canceling a major part of our space program."

Cain also criticized Obama for using Russian technology to ferry astronauts and cargo to the International Space Station.

"I can tell you that as president of the United States, we are not going to bum a ride to outer space with Russia," Cain said to loud applause. "We're going to regain our rightful place in terms of technology, space technology."
I don't know what the reaction of the crowd was (the reporting wasn't that detailed) but I'd imagine it was friendly. You can usually get a warm response from a Republican crowd by coming out in favor of manned space exploration which is, when you think about, strange as hell.

If you set out to genetically engineer a program that libertarians ought to object to, you'd probably come up with something like the manned space program. A massive government initiative, tremendously expensive, with no real role for individual initiative. Compared to infrastructure projects the benefits to business are limited. You could even argue that the government's presence in the field crowds out private development.

(Much has been made of the rise of private space firms, but barring a really big and unexpected technological advance, their role is going to be limited to either unmanned missions or human flights in low earth orbit for the foreseeable future.)

There have been efforts in libertarian-leaning organs (The Wall Street Journal, Reason, John Tierney's NYT columns) trying to argue that interplanetary exploration can be done on the cheap. These usually rely heavily on the blatant low-balling of Robert Zubrin* (Tierney, a science writer who has no grasp of science, made a particularly ripe mark), but even if we were to accept these numbers, it's still difficult to reconcile this kind of government program with libertarian values.


* On a related note, check out this other example of Zubrin's estimation skills.

Tex Avery animates David Frum's sudden move to the center

At about ninety seconds in.

Friday, November 11, 2011

Pre-blogging Jack Shafer

I've got a couple of posts coming up on related subjects so I thought I'd get this out of the way in advance.

Here's Jack Shafer explaining how his intense antipathy toward plagiarism is all about the readers (via Salmon):
The plagiarist defrauds readers by leading them to believe that he has come by the facts of his story first-hand–that he vouches for the accuracy of the facts and interpretations under his byline. But this is not the case. Generally, the plagiarist doesn’t know whether the copy he’s lifted has gotten the story right because he hasn’t really investigated the topic. (If he had, he could write the story himself.) In such cases he must attribute the material he borrows so that at the very least the reader can hold somebody accountable for the facts in a story.
Putting aside the fact that Shafer has never gotten that worked up about colleagues' inaccuracy (you'll notice he didn't jump on this story about his friend Gregg Easterbrook), there's an interesting game here of rhetorical Three-card Monte. The cards in this game are the three types of plagiarism: theft of ideas and interpretations; theft of facts and data; and theft of wording.

In the world of research, the first two are considered the most serious. Stealing the hypothesis of another paper or presenting someone else's data as your own is about the worst thing you can do. Lifting a passage of someone else's writing is frowned upon but prose style does not drive impact factors.

For journalists, the situation is exactly reversed. Reusing another writer's phrases is clearly considered the worst kind of plagiarism, perhaps the worst journalistic crime period. Stealing facts (such as using other people's reporting to cover an event) is seldom even mentioned except in the most flagrant of cases. As for appropriating ideas, the practice is so common as to almost be standard. Even those most modern of journalistic concepts, memes, are almost always based largely on the plagiarism of hypotheses and arguments.

Now, here's the part where the cards really start to move. Shafer's criticism only applies to the first two types of plagiarism, the two types he doesn't object to. (aren't the first two nested in the third? Sometimes, but Shafer apparently doesn't have a problem with borrowing and paraphrasing, it must be the not-paraphrasing part that bothers him). If Shafer really wants to convince us that borrowing without paraphrasing is more than journalist-on-journalist crime, he'll have to do better than that.

Thursday, November 10, 2011

Health Care Costs

We have known for a while that the United States spends a lot on health care. What is interesting is that the direction seems to be moving in the wrong way both in terms of life expectancy and cost:

You can see that not only is the United States the outlier when it comes to spending, but we are moving in the wrong direction: we are becoming more of a spending outlier, and we are drifting down from the average life expectancy into the lower group (currently surpassing only Turkey, Hungary, Mexico, Poland, and Czech Republic).


and


The other thing you see is that our life expectancy gain was the absolute lowest of the whole group (and we weren’t starting from a particularly high level, as you can see in the previous chart).

Ordinarily, you would think there should be convergence across countries. Since other countries spend less and live longer, you would think that we would learn from them—global competition, you know. But instead we’re moving the wrong way on both dimensions.


The article and neat charts are worth looking at in their entirety.

Now, it is true that there can be a lot of reasons for low life expectancy and high medical costs. It could be that the environment in the United States makes us much more accident prone, for example, requiring both higher spending and more fatalities.

But, in general, it is uncomfortable when the most important metric of health care outcomes (all cause mortality) is so uncorrelated with cost. This suggests the possibility of productivity improvements. I read a lot of the Incidental Economist, who try to explain these issues. But I admit that I tend to come away confused.

The major comparison is often Canada. It is a bad reference on a lot of levels (as they have their own issues). But they have similar culture, ethnic diversity, large geography, heavy use of cars, high levels of obesity and yet they are improving on both metrics (from a lower level of cost and higher life expectancy at baseline).

Why is health care the one area that we aren't willing to look at how other countries have been successful and try to steal ideas?

Wednesday, November 9, 2011

Old story, different hemisphere

More good work from American Public Media's Marketplace:
Rob Schmitz: If you walk down the street in Shanghai, it's hard to miss the advertisements for college placement agencies. In big bold letters, they promise -- some even guarantee -- your child's admission to an American university. The price: $5,000, $6,000, sometimes $7,000.

Jiang Xueqin is a well-known education reformer in China. He also heads the International division at Peking University High School -- one of China's best high schools. He has followed college placement agencies for years. He says this is how many of them deliver on their admission promises: they falsify students application materials.

Jiang Xueqin: There's a lot of pressure on the agencies to write the application essays, to fake transcripts, to fake recommendation letters. This is just general business practice in China to falsify a lot of documentation.

A report by consulting firm Zinch China seems to confirm this. Zinch advises American colleges and universities on recruiting Chinese students. The firm interviewed agents and admissions consultants, as well as more than 200 Beijing students headed to U.S. schools. Zinch estimates 90 percent of these students submitted false recommendation letters; 70 percent had other people write their personal essays, and half of them submitted forged high school transcripts.

Werner Herzog, LA, and structural employment in hot jazz

The director had an interesting interview on KCRW's none-too-imaginatively named show on the business of Hollywood. The part that particularly caught ear occurred about nineteen minutes in:
"We [Herzog and his wife] have to move into the city with the most substance in the United States, cultural substance."
"And that wasn't New York..."
"New York is more on the receiving end, it's more on the consuming end. ... Los Angeles, this is a place where things get done."
This jibes with something I've noticed since moving to LA and falling in (through no fault of my own) with the hot jazz scene in town. There are some extraordinary musicians around here, the kind who develop international followings and get glowing notices in the New York Times.

LA has a wealth of musical talent, but if those musicians want any wealth for themselves they have to head east. Because, though you might argue that the West Coast has the best musicians, the East Coast unquestionably has the best fans, at least when it comes to ponying up. In NYC these musician actually make good money; in LA you can often find them working for kind words and Pez.

If you're looking for creative energy, I'm with Herzog -- you can't do better than LA. If you're looking for a market for all that creativity, you might want to try the other coast.

Tuesday, November 8, 2011

But some of my best friends are administrators

As I've said before, most principals and superintendents I've dealt with have been dedicated and highly professional educators, so why do I keep picking on them? While it's possible that I do have a small problem with authority, my motives here are mostly pure. I'm trying to correct a cherished but dangerous piece of misinformation embraced by movement reformers.

For all their admirable traits, we have to acknowledge the world administrators live in: they are generally at least one step removed from the classroom and regular contact with students; their jobs are highly paid and highly political with badly aligned incentives and considerable temptations to abuse the system. Movement reformers like Jonathan Chait have convinced themselves that a major key (perhaps the key) to improving education is removing checks on administrators' power and upping rewards for manipulating the system. I'm just pointing out that some administrators need less power and fewer temptations.

I haven't taken a cheap shot at an administrator for a while

And superintendent Eric Ely certainly has one coming. He's certainly not the main villain in this amazing story from This American Life, but he clearly did his share to allow this psycho* to terrorize a number of people and endanger students, and while that character ended up in prison (probably for the rest of his life), Ely landed in another cushy superintendent's job.






* think this is hyperbole? Listen to the episode.

Speaking of curriculum -- Armenian edition

From NPR's The World:

Armenia’s public schools started mandatory chess classes for every second, third and fourth grader in the former Soviet republic this year. Twice a week, seven- to ten-year-old Armenians are getting a half hour of instruction in chess basics, with the goal of being able to play a competent game by the end of fourth grade.

One of those schools is Public School 81 where Grigor Martikian is drilling 20 second graders on how to move the bishop. He positions a bishop into the corner of a large model board in front of the class.

The students follow along on chess mats on their desks.

Edouard Aroustian and Seta Kevorkian are both seven and have learned a new checkmate move. When I ask them if they know about Armenia’s national chess team, they nod and smile.

That team was the pride of Armenia this past summer, when it won the World Chess Team Championship in Ningbo, China. Armenians treat chess champions like star athletes. Chess is one of the most popular games here and there are 32 grandmasters in a population of about 3 million.

If only I could talk them into trying octagonal games...

Monday, November 7, 2011

At least we aren't giving them antidepressants

From NPR:
Babies have been crying and spitting up since time immemorial. But these days many parents ask: Isn't there a drug for that?

"Parents come in often demanding medication," says Eric Hassall, a pediatric gastroenterologist at Sutter Pacific Medical Foundation in San Francisco.

Prescriptions for acid-suppressing medicines for infants have increased dramatically. Hassall says some parents have picked up on the idea that heavily advertised medicines for reflux in adults can help fussy babies who spit up a lot.

He documented a 16-fold increase in prescriptions of one proton pump inhibitor, or PPI, Prevacid, which comes in a child-friendly formulation. A Food and Drug Administration review also found an 11-fold increase in number of new prescriptions dispensed between 2002 and 2009.

These medicines aren't approved for infants with reflux, or GERD. Still, some doctors have been prescribing them off-label anyway. Doctors generally agree this practice is OK when babies really need the medicine, such as when they're spitting up so much that they're not gaining weight.

One of the risks of living is dying

From the incidental economist:

I can hear the howls of protest already. But here’s the example I always go to: the number one killer of children in the US is car accidents. But we don’t ever consider stopping driving. I know that every time I put my kids in a car, I’m significantly increasing the chance that they could die. But I (and pretty much all of you) believe that the benefit to our lives from cars outweighs the increased risk of death in our children. Let me put it another way. We all accept that it’s worth a number of children dying so that we can all get around more easily.


One of the great challenges that we face as a society is how to balance risks and benefits. I am becoming increasingly convinced that people are simply poor at making these trade-offs. This is especially true given that the risk of death is 100%. In a real sense we all end up dying. The goal, instead, seems to be to make the time that we have as good as possible. A theory of the joint maximization of lifespan and happiness seems to be the best way to go.

Given that, I think Dr Carroll's point is quite sound: we take risks all of the time in order to make life worth living. The trick is to quantify which risks are worthwhile, conditional on the absolute level of risk.

Wednesday, November 2, 2011

The worst example of curriculum dead wood?

One of the first things that hit me when I started teaching high school math was how much material there was to cover. There was no slack, no real time to slow down when students were having trouble. The most annoying part, though, was the number of topics that could easily have been cut, thus giving the students the time to master the important skills and concepts.

The example that really stuck with me was synthetic division, a more concise but less intuitive way of performing polynomial long division. Both of these topics are pretty much useless in daily life but polynomial long division does, at least, give the student some insight into the relationship between polynomials and familiar base-ten numbers. Synthetic division has no such value; it's just a faster but less interesting way of doing something you'll never have to do.

I started asking hardcore math people -- mathematicians, statisticians, physicists, rocket scientists*-- if they'd ever used synthetic division. By an overwhelming margin, the answer I got was "what's synthetic division?" Not only did they not need it; it made so little impression that they forgot ever learning it.

Which bring us to this passage from a recent Dana Goldstein post (discussed earlier):
The problem, according to [David] Coleman, is that American curriculum standards have traditionally been written by committees whose members advocate for their pet pedagogical theories, such as traditional vs. reform math.
Except, of course, that's not what happened here. As was the case with so many topics in mathematics, synthetic division remained in the curriculum because no one who knew what was going on had bothered to look that closely. Coleman has a clever narrative, but it doesn't fit the facts all that well.

Now I have a request for all the math geeks in the audience (and given that you're reading a blog called Observational Epidemiology...). Since we need to pare down the curriculum, what you choose to cut? Specifically, what mathematical topics that you learned in school can future generations do without?


* Literal rocket scientists -- JPL's just down the road.

Also posted in a slightly different form at Education and Statistics.

Tuesday, November 1, 2011

We need curriculum reform but we need to do it right

Dana Goldstein is arguably our best education writer and I have long argued that we need curriculum reform, but this post makes me nervous as hell:
Past attempts to develop national curriculum guidelines became mired in culture war controversy, but this latest effort--led by the states, not the federal government--has a real shot at influencing teaching and learning at the classroom level, and hopefully fostering a more rigorous academic culture in American public schools. If administrators and teachers implement the new standards faithfully, how will the curriculum evolve? Let's first look at math.
Currently, American students are taught just a little bit about a whole lot of mathematical topics each year; we have a curriculum with tons of breadth, but not much depth. Check out this chart Coleman showed us from education researcher Bill Schmidt. It demonstrates that while typical first-graders in high-achieving Western European and Asian countries learn just three concepts--quantity, measurement, and addition/subtraction of whole numbers--American first-graders must learn 14 topics, including polygons, circles, how to use a compass, and how to estimate.

The American curriculum may appear more rigorous, but our six-year olds are actually being denied the opportunity to master the foundational skills upon which the rest of their mathematical education will be based. The problem, according to Coleman, is that American curriculum standards have traditionally been written by committees whose members advocate for their pet pedagogical theories, such as traditional vs. reform math. "The only way to end a committee meeting is to let everyone get their stuff in," Coleman said. The result is that teachers feel rushed each year to move through an enormous list of standards. "Students and teachers bear all the weight of this," Coleman pointed out. "The standard writers are removed from this." The goal of the Common Core is, for the first time, to move American math standards in the simplified direction of our international peers.

.....

Before closing out, a few words on the nuts and bolts of the effort to implement the Common Core. The project is a partnership between a number of organizations, including the National Governor's Association; the Council of Chief State School Officers; Achieve, a non-profit testing group created by the governors; the ACT; the College Board; the State Higher Education Executive Officers; the American Association of School Administrators; and the Business Roundtable. The federal government is supporting the Common Core with about $350 million, most of which is dedicated to developing and implementing tests based on the new standards. Federal funds are also being used to create instructional materials and professional development sessions for teachers who will use the new curricula.

The other major supportor of the Common Core is the Gates Foundation, which expects to spend a total of $250 million "to develop next-generation instructional tools and assessments that will help states and school districts implement the standards."
Before I wade into the red flags, the suggestion that the curriculum needs to be greatly pared down is dead on. We do try to cover a ludicrous amount of material, much of it of little value. The explanation given here is too tidy (there are plenty of ways for undeserving concepts find their way into the standards), but it is, at least partially true.

Now the parts that make me apprehensive:

If you take on the paring without some serious thought, you can do more damage than good, and this example seems exactly the sort of thing that someone who hadn't given the subject much thought and who didn't know much about math might come up with;

And on the subject of the people behind the initiative, the list of partners seems rather light on mathematicians and scientists;

The emphasis here on elementary school is troubling. Historically, I believe it's the upper grades where we start to fall behind on international tests. Are we possibly fixing the part that works? This may be a small point but we've seen a long string of solutions that mainly affected areas which weren't actually affected by the problem. This does not inspire confidence;

The focus on international rankings is an even more troubling sign. TIMSS and PISA are too big a subject to go into this late in the evening, but there are a lot of reasons to worry about role that international tests play here. Just for a a brief overview, there are questions about
-- what these tests are really measuring,
-- where the problems with American scores are coming from,
-- what techniques really drove the successes in highly ranked countries,
-- whether those techniques would carry over to other cultures,
-- and finally the one closest to my heart, is there a possible downside to a country that built the world's greatest economy largely on creativity and unconventional problem solving suddenly doubling down on rote learning and regurgitation?;

Nor does the make up of the list of partners reassure me. I've already mentioned the lack of math and science people. As for the rest, the combination of politicians, administrators and businessmen seems awfully like the assortment that got us in this mess to begin with.

Curriculum reform is important but it's also difficult and I've grown rather cynical about the willingness and ability of most reformers to do the hard work and lay a solid foundation to support the big talk when it comes to difficult problems. Perhaps I judge these things too harshly but I haven't read anything here that makes me optimistic.

Sunday, October 30, 2011

Is consistency too much to ask?

Paul Krugman points out a nasty trick:

In legal terms, the program is funded not just by today’s payroll taxes, but by accumulated past surpluses — the trust fund. If there’s a year when payroll receipts fall short of benefits, but there are still trillions of dollars in the trust fund, what happens is, precisely, nothing — the program has the funds it needs to operate, without need for any Congressional action.

Alternatively, you can think about Social Security as just part of the federal budget. But in that case, it’s just part of the federal budget; it doesn’t have either surpluses or deficits, no more than the defense budget.

Both views are valid, depending on what questions you’re trying to answer.

What you can’t do is insist that the trust fund is meaningless, because SS is just part of the budget, then claim that some crisis arises when receipts fall short of payments, because SS is a standalone program. Yet that’s exactly what the WaPo claims.


I wonder if the people who want to privatize social security have thought through exactly how bonds held in a 401(k) are different than the trust fund? Perhaps they are more awkward to default (in terms of not paying the bonds) on but governments have raided retirement accounts before. Add in the strange equivocation between "social security" and "social security/medicare" in terms of projecting cost growth (with the second) and targeting the first for reduction.

In general terms, I do not understand why there are such strong objections to income support for people in old age. The program isn't cheap but it widely benefits the majority of Americans (a lot). Why is it such a popular target for debate? Why not debate how high defense spending is relative to the rest of the planet? Or the amazing cost increases in medical care? Why are these not more pressing issues?

I really do not understand because this debate is eating up precious intellectual effort that really needs to be going into comparative effectiveness discussions for medicine.

Saturday, October 29, 2011

Pre-blogging David Carr

I'm working on a couple of journalism posts (one about victimology and the other a reply to this post from Andrew Gelman). David Carr figures in both so I thought this would be a good time to provide some background with this clip.



I got this from Chait so I'll give him the last word:
That's actually repugnant. I don't actually think the sentiment reflects the general view of the Times, but I do think the Times deserves to be held accountable. If the newspaper lets reporter pop off on a talk show, then his opinions are going to represent the Times.

Friday, October 28, 2011

California Pension Reform

I have always had a fascination with California politics and we've talked a lot about personal finance. So I read this reform proposed by Jerry Brown with interest:

To deal with what have been widely seen as abuses of the retirement system, Mr. Brown said the pensions of all new employees should be based solely on their regular salaries, not taking into account any overtime or bonuses. For existing employees, he said the retirement benefits should be based on an average of the last three years’ salary.


I was always surprised that it was any other way. After all, employee base salary is a reasonably predictable variable for actuaries. Furthermore, base salary is likely to be more representative of the income that actually needs to be replaced in retirement and inflating that number can lead to very high liabilities. Finally, it creates the potential for unfairness as the ability to get overtime in one's final three years may depend on the discretion of the supervisor.

I am completely against the current assault on pensions but that doesn't mean that we shouldn't look for places where intelligent reforms can happen.

All in all, it seems like a much saner approach. We'll see if it manages to gain any traction!

Another cautionary tale of corruption by metrics

This American Life has a great piece of radio up on their site. (You can get a free download if you hurry.) It's the account of a patrol man who started collecting evidence of rule-breaking in the department. The story itself is remarkable but what makes this piece extraordinary are the audio segments that the policeman covertly recorded, including the incredibly suspenseful confrontation near the end.

There are any number of interesting angles to this story but the one that caught my ear (at least with respect to the discussions we've been having here) is the role that metrics played.

Ira Glass

The New York Police Department declined our request to come onto the radio or to have the officers who supervised Adrian Schoolcraft, and who are heard on his recordings, to be interviewed about their side of all this. But the pressure on police commanders to get better numbers really goes back to 1994, when New York started tracking crimes with a system called CompStat. CompStat, for the first time, gave commanders timely, accurate data once a week on what crimes are happening, so they could send more cops to deal with it. Chances are you've heard of all this. It became one of the best known successes in modern policing. Serious crime has dropped an astonishing 77% in New York City since CompStat began in 1994. Other cities very quickly started imitating it-- DC, Philly, LA. Baltimore's version of CompStat ended up in a recurring plot line on the TV show The Wire, where street cops are told by the bosses to do anything to pump up their numbers. And the problem with CompStat, says Professor Eli Silverman, who studies the way police forces use numbers, is that the early success of CompStat created the expectation that numbers must get better every single year, no matter what.

Eli Silverman
In the beginning it was like an orange. You could squeeze juice from an orange in the beginning much more readily than you can as you extract juice from that orange. And now, it gets harder and harder to drive crime down, because you're compared to not how you were in '94, but how you were last year the same week. And when something's pushed to the excess that it is now, and numbers dominate the system, that's when you have negative consequences.
Specifically consequences like this:

Ira Glass
Then when the officer tried to file it that way, because he didn't have a name for the unauthorized driver, he couldn't file it at all. So the robbery went unreported. Rules go into effect in the 81st precinct that make it harder to report serious crimes. Officers are told that if there's a robbery, one of their supervisors has to come out to the scene themselves. And robbery victims are told that if they don't come into the police station, no crime report will be filed at all. After Graham Rayman started publishing these stories about Adrian Schoolcraft, retired cops and some on-duty cops started contacting him with their own anecdotes about crimes being downgraded from serious to much less serious-- the most shocking of these from a high ranking detective name Harold Hernandez.

Graham Rayman
He's a very distinguished detective. He was working in the 33rd precinct in Washington Heights. And one morning he comes into work and there's a guy who's accused of first degree rape sitting in his interview room. So he sits down and he looks at the guy. And he has a little twinge, and he says, have you ever done this before? And the guy said, yeah. And Hernandez says, how many times? And he says, oh, I don't know, seven or eight. And Hernandez says, where? And he goes, in this neighborhood. And Hernandez is now dumbstruck because there's been no report of a serial rapist-- sexual predator-- working the neighborhood.

Ira Glass
Like, no crimes have shown up. People haven't shown up saying they've been raped or assaulted.

Graham Rayman
He hasn't been notified. And he would be notified as a senior detective in the unit. It would be a very big deal. And so he says, can you give me the dates and locations? And the guy says, well, I can try, but you're going to have to take me around and I'll show. I'll show you. So he and a fellow detective get in the car and they drive around. And they look, and the suspect-- whose name is Darryl Thomas-- points out the locations. And then Hernandez takes his notebook and he writes down the locations. And then he goes back and he looks through stacks of crime complaints. And he finds them. And he realizes that they've been classified-- they've been downgraded. They've been classified either as criminal trespassing or criminal possession of a weapon-- both relatively minor crimes, given that the actual conduct in the narrative that the victims are describing is either first degree burglary, robbery, or sexual abuse, sexual assault. And he confronts his bosses about it. He confronts the precinct commander. And he confronts his detective squad commander. And everyone just shrugs. Meanwhile everyone's terrified that it's going to come out-- that these women are going to go to the press, and it's going to be a huge embarrassment, a huge scandal for the department. And if it had come out, it would have been a huge scandal for the department. But the department was able to keep it quiet. The District Attorney's office prosecuted Thomas and he went away for 50 years. But here's the interesting part-- they never publicized the case. There was never a press release issued about it. There was never a news article written about the case.
One of the reasons that metric-centric systems can become so bad is that they almost always start out as something good. Compstat, like standardized testing, was a good thing and still is, if used properly. At some point though, people start to focus more on the metric, not because increased focus is helpful but because a metric-based approach is so seductively simple. When that happens the metric becomes an end rather than means (the map becomes the thing for all you Korzybski fans in the audience).

That's generally when things go to hell.

Wednesday, October 26, 2011

Felix Salmon on the implosion of Netflix

Felix Salmon has a great post up on Netflix. You should definitely read the whole thing but this passage in particular caught my eye:
In hindsight, it’s pretty clear that Netflix CEO Reed Hastings let the bubblicious stock price — it briefly topped $300/share at the beginning of the quarter — go to his head. The company was swimming in money! And so, in September, Hastings signed a deal to pay $30 million per movie for everything that DreamWorks creates, in return for the right to stream those movies a few months after they’re released on DVD. It’s known as the “pay-TV window”, and in order to wrest those rights from HBO, Netflix had to outbid HBO, which was reportedly paying something in the neighborhood of $20 million per movie.
There is a huge hype machine out there, powered by a symbiotic PR/press relationship and focused on selling tales of visionary CEOs. These stories are almost always incredibly distorted. In all but a handful of cases, these superstar CEOs are simply competent executives who had two or three good ideas and a great deal of luck.

When you're at the center of all that myth-making (as Hastings was), it can be difficult not to start believing it. When that happens, bad decisions inevitably follow. We've all heard about Hastings' disastrous attempts to wreck a perfectly good business model but I think this example (again from Salmon) might just be more telling:
Maybe the company shouldn’t have spent $40 million, over the course of the third quarter, buying back 182,000 shares at an average price of $218 apiece. (In the wake of today’s results, they’re trading in the $80s.)

While you're there, check out Salmon's tremendously informative discussion of the dynamics of Netflix's stock swings.

Is this an expression you want to see on the face of a woman holding a giant axe?

Just in time for Halloween (via TPM):

A Luddite Portfolio


Radio was supposed to kill newspapers, as were newsreels, slick magazines, television, and the internet. There was even a short-lived attempt to replace newspapers with fax machines. If we start from the Fessenden broadcast, the industry has been dying for ninety-five years and in that time any number of fortunes have been made publishing the damned things.

One of the memes we've heard ad nauseam in coverage of the Netflix story is that in order to survive, a company has to rush forward and grasp the future and divest itself of any vestiges of the out-of-date. This concept of CEO as bold futurist has great appeal, both for businessmen and business writers, but does always jumping on the latest technological bandwagon really work as an investment strategy?

Certainly, investing in cutting edge technologies can yield great returns (so can a winning lottery ticket), but it is by no means a sure bet. There are plenty of examples of innovative technologies that never went that far (the Teletouch transmission and the 8-track come to mind). There are also cases of old technologies that seem destined for obsolescence only to reinvent themselves (how many people in 1950 thought radio would remain viable a half century into the television age?) or that manage to survive as a niche product (did you know that you can still buy vinyl records at Target?).

A very good argument could be made that business writers get overly excited about the next big thing and since buzz can certainly pump up stock prices, there could very well be an undeserved premium on stocks associated with up and coming technologies. That would mean that the Luddite, by avoiding those overpriced stocks, could well have an advantage.

At the very least he would probably have unloaded Netflix when the CEO started talking about moving past DVDs, rather than waiting for the company to start to implode.

Tragic alignment

This NPR report about how the foster care system in South Dakota treats Native American families is an exceptionally powerful piece of journalism. It illustrates how bad things can get when the wrong forces align: poorly designed incentives, the corrupting power of money (in a fairly mild form), racism and class bigotry (also, I suspect, fairly mild), and the obliviousness of most journalists and other watchdogs to what goes in most of the country. This is not a story of bad people; that's what make it so tragic.

If you have a few minutes, follow the link and listen to the account. And while you're there, why don't you send a few bucks to NPR, journalists who actually do care about what happens to people the rest of the media overlook.

Tuesday, October 25, 2011

Interesting Trading Idea

The reformed broker has a great post on ten things not to do as an individual investor. Here is one that I think is worth keeping in mind in a more general sense:

"The market is all betting one way so of course I'm betting the other way." This works very well at major turning points, which are very rare. In truth, the herd usually outsmarts the remnant and you're much better off being an ordinary zebra in the middle of the pack than straying off on your own into a deep ravine where predators lurk. If there is a turning point you see coming and you want to exploit it, fine - just don't bet your life on it and deploy all your capital at once. Also, keep in mind that not everything mean-reverts, some things simply trend - some investments will simply never come back to where you wish to buy or sell them regardless of historic price points that might make sense to you. And being contrarian just for the sake of being different is not the same as being contrarian because you see something that others don't.


You see this tendency in a lot of fields. It is psychologically fulfilling to see oneself as the loner, who can see the truth that the rest of the herd so blindly overlooks. Unfortunately, there can be a very good reason that the herd is stampeding away from the vicious lion!

I've personally watched people lose money with the notion of mean-reversion (do we still think that AOL will revert back to its tech bubble peak?). I think we see the same phenomenon in academic research programs. It seems so cool to find this interesting and counter-intuitive finding that nobody else has seen. Because they are idiots. Or, perhaps (just perhaps), because I've managed to overlook something crucial to the whole process.

So if the finding seems to explain a complex phenomenon in a simple way . . . beware. There might be a reason that the herd is off chasing the complex solution and ignoring the counter-intuitive position.

Monday, October 24, 2011

A tweet from Matt Yglesias

Seriously amazing how much better digital over the air looks than "HD" cable with compression.


Isn't this the same argument Mark has been trying to make about Broadcast Cable?

UPDATE: See more here

The secret of (unintentional) comedy is timing

I don't know much about academic publishing so I'm probably missing some of the subtleties here but this certainly seems to be a situation I would have played differently. It's late 2008 and you're putting the finishing touches on a paper asking how so many American economists could have failed to see what a great idea the Euro was. Given the events outside your window, don't you think you would have dragged your feet a bit on the submission, or at least hedged your wording a bit?



Apparently these guys didn't. (via Krugman)

Saturday, October 22, 2011

I could not disagree more

One of the things that makes cities tolerable is public land (as private parties cannot possibly own enough land for this effect) where there is green space to visit. Even if it is not always in use, the availability is of great psychological value. But this line of thinking could result in many fewer parks:

That’s not to say we should pave all the parks. But we should be thinking of something to actually do with them. Cities are full of people, and most of the country doesn’t have Southern California weather. There’s limited practical demand for just sitting around outside.


The reason we have to provide public parks is that developers can maximize profits by not including them. But if every developer omits including a park, you end up with no place for children to ever play. I worry that this is looking at a very small problem and risking creating a large one by trying to solve it.

Friday, October 21, 2011

Great catch from Jared Bernstein -- four years of your life for a lousy, stinking 0.1% a year

Bernstein has been doing exceptional work lately. Here he points out a genuinely shocking statistic:
Second point: again, Steve’s not at all alone in advocating for a more highly educated workforce, but he blows by an amazingly sobering statistic:
Achieving higher wages also requires a greater commitment to education; wages for those with college degrees rose 1.4 percent between 2000 and 2010, after inflation.
That’s not 1.4% per year—it’s 1.4% over 10 years! 0.1% per year…OMG—that’s the big freakin’ payoff!!

Now, there’s no question that college grads did better than high school grads, whose real wages fell by 2% over these years (see the data table below). And no question that we’re better off with a more skilled workforce. But a 1.4% median wage gain over 10 years for college grads is not part of the solution…it’s part of the problem.
I'd actually take this further. That 3.4% difference came with four years of lost wages and job advancement and, in many (most?) cases, serious debt. There seems to be a consensus that the country needs educated, tech-literate workers, but if we are serious about this, we need to do something about a system where getting a degree may actually be a losing proposition.

I'd start by scrapping the idea that we should make education accessible through subsidized and (God help us) nondischargeable loans. The current system of easy credit distorts the market in any number of truly ugly ways and takes undue advantage of the vulnerable and inexperienced. If we really want to we can find a better way to make college affordable.

Occasionally I feel a little down...

Some mornings I don't feel like getting out of bed.

There are times when I don't feel like being around people.

Sometimes I feel sad.

For years I simply thought I was displaying a normal range of emotions. I certainly never thought that this required medication. Until recently I assumed anti-depressants were for the moderately to severely depressed, people who suffered from conditions that profoundly affected the quality of their lives and their ability to function, conditions that could even be life threatening.

But I've been watching some short educational programming from the drug companies (it's amazing how much information they can pack into thirty seconds) and apparently feeling down is real warning sign, serious enough to consider taking powerful and expensive psycho-active drugs with some potentially nasty side-effects including loss of sex drive and (this is the one that always makes me chuckle) thoughts of suicide. I've even seen short educational programs that recommend supplementing your antidepressant with yet another pill.

If you scroll way down, you'll see that Joseph has questioned whether one out of ten Americans really need to be taking these drugs, but you know those epidemiologists -- just a bunch of professional worriers.

Thursday, October 20, 2011

Possibly the best graph of the year

I think Jared Bernstein is trying to tell us something.


In terms of column inches, this can really help a blogger's productivity.

Antidepressants

It seems like this drug class is getting more popular, with 10% of Americans taking these medications. So I go to Pub Med and notice:

I take a look at the number needed to harm (see: Arroll B, Elley CR, Fishman T, Goodyear-Smith FA, Kenealy T, Blashki G, Kerse N, Macgillivray S. Antidepressants versus placebo for depression in primary care. Cochrane Database Syst Rev. 2009 Jul 8;(3):CD007954.) and quickly conclude that either 10% of Americans are depressed (which is a silent and important epidemic) or else there are a lot people having unexpected adverse drug effects due to overtreatment.

I do know that my work in population cohorts suggests that 10% of people having clinically significant levels of depressive symptoms is a very high estimate.

Tuesday, October 18, 2011

Ms Goldstein on Tenure

I think that Dana Goldstein has a really good view on tenure:

Indeed, the Green Dot model calls for teams of teachers to be actively involved in hiring their peers; this is a highly-vetted workforce operating in an environment that emphasizes collegiality and professionalism. Without such healthy school envirnments, unions and teachers will have a hard time giving up the tenure protections they've won because of a very real history of adminstrative overreach.


I see this issue as being very similar to online education. My department has a very strong online graduate program. Contrary to all predictions, moving education to an online environment takes a lot of work and isn't as effective at improving productivity as one might imagine. It's possible to do a high quality online program, but it sure isn't inexpensive or easy.

In the same sense, the idea of removing tenure and leaving effective (albeit different) schools has a lot of the same properties. By increasing teacher empowerment, involving teachers in decisions, and increasing compensation you can develop a workable model. After all, tenure is a job perk and it can be replaced by other job perks like employee autonomy and empowerment.

But what the removal of tenure isn't is a cheap way to reduce teacher salaries while holding quality constant. I am agnostic as to the existence of tenure in a workplace. It is a nice perk but it brings downsides as well. What I find more alarming is the effort to remove tenure and replace it with . . . nothing. Or, even worse, replacing nuanced teacher review with test scores (and then removing tenure).

I admit to being very sympathetic to empowered workplaces. My natural work environment is likely the Left Coast and reading about the corporate culture of Silicon Valley convinced me that I'd do better there than in Boston. But these environments are not a cheap and easy substitution for conventional models. They are hard to develop and really require that the employees be either mobile or empowered.

Is that a goal reformers really want to work towards?

Monday, October 17, 2011

"Don't like my tax plan? Dial 1-800-EAT-USED-FOOD"

It was an unfortunate juxtaposition but one the Cain campaign really should have seen coming. In case you haven't heard, Herman Cain's tax plan includes a sales tax on everything but used goods. During a report I heard today, an economist pointed out how regressive the plan was, in part, he said, because poor people spend a disproportionate part of their income on food (which is taxed under the plan). The report then had Cain challenging the complaints about his plan hitting the poor the hardest by saying they could change their behavior and buy more used things.

Insert Godfather's Pizza joke here.

Some more thoughts on MeTV

This time posted at MippyvilleTV and focused on the venerable Svengoolie.

Unemployment

Mark Thoma is strident:

The use of the term "slackers" is telling. You see, there's plenty of work for the industrious, our unemployment problem is due to laziness. There are plenty of jobs -- pay no attention to the fact that the number of unemployed is far, far greater than the number of jobs -- people don't really want to work. It has nothing to do with the crash of Wall Street destroying the economy, and the bounce back and present good fortune on Wall Street has nothing to do with the government bailing them out -- it was their hard work that fixed the problems.


I think that it is worth keeping in mind how dynamic the world is. There was a time, during the Clinton administration, where the willingness to work was enough to ensure employment in much of America. But the current unemployment rate suggests that many people who would like to work can't.

I really don't understand the disconnect here. Large enterprises need to be helped out by the government? Isn't that industrial policy?

From a health care point of view, unemployment is associated with all sorts of medical ills in the United States. Medical services are so expensive that unemployed people may neglect basic preventative care and end up in the (much more expensive) emergency room. Plus, it is likely that unemployment itself (a source of chronic stress and deprivation) may also have negative health impacts.

I really wonder when we will face up to this as a joint problem!

Sunday, October 16, 2011

More banking thoughts

Reading Mark's last post brought to mind this New York Times article on how sticky bank accounts have become:

What they haven’t mentioned are marketing studies like the one commissioned by Fiserv, which develops online bill paying systems, showing that using the Internet to pay bills, do automatic deductions and send electronic checks reduced customer turnover for banks by up to 95 percent in some cases.

With 44 million households having used the Internet to pay a bill in the past 30 days — up from 32 million five years ago and projected to reach 55 million by 2016 — it’s a shift that has major ramifications for competition.

There’s even evidence that fewer consumers are switching banks, with 7 percent of them estimated to be moving their primary account to a different institution in 2011, down from 12 percent last year, according to surveys by Javelin Strategy and Research.

Emmett Higdon, a consultant who managed Citibank’s online bill payment product from 2004 to 2007, said that “for the consumer, it’s a double-edged sword.” While customers value the convenience, inside the industry “it was known that it would be a powerful retention tool. That’s why online bill paying went free in the first place. Inertia is powerful in the banking industry.”


Ironically, I actually see that these services are a point in favor of the banking industry. If these services are entered into voluntarily and make banking much more pleasant (which I can definitely confirm) then it is not a surprise that it is hard to move banks. Heck, I think it might have been harder back in the old days when you had to show up at a teller during banking hours.

Instead, we are seeing the banks seek out the point at which cost and convenience meet. Honestly, given the costs of handling cash, I think that they are nuts not to try and encourage electronic payments. After all, one option that Bank of America customers have is to start using cash for purchases and stop using debit cards.

My major barrier to the use of cash is the silly idea that we have to add sales tax to the posted price, making it impossible to calculate the amount due at the register (as the sales tax may vary by product, especially in a grocery store). If posted prices were the actual amount spent, I would be the master of exact change!