Comments, observations and thoughts from two bloggers on applied statistics, higher education and epidemiology. Joseph is an associate professor. Mark is a professional statistician and former math teacher.
Friday, October 14, 2011
Financial security and the decision to start a family
Thursday, October 13, 2011
Best economic metric based on a Seinfeld routine
Ryssdal: I'm just looking at the list of things we were going to talk about and I see next -- and I hesitate to mention this -- the men's underwear index.
Brancaccio: The theory is during bad times we're less likely to replace our boxers and our briefs. I wouldn't have brought the tone of this conversation down this far if the source had not been so exalted.
Ryssdal: Give it up. Who is it?
Brancaccio: Well, back in the '70s before he was Fed Chairman, Alan Greenspan ran his consulting firm. One way he kept track of the economy was by looking at offbeat economic indicators like the men's underwear indicator -- MUI for those of you in the know. Here's the theory: When you're feeling strapped for cash, your less likely to replace your undergarments even though most people see under see underwear as a necessity not a luxury.
Ryssdal: So one is obliged to ask David, how are sales now?
Brancaccio: Well, we did check. And according to an analyst who tracks these things -- underwear sales for the NPD Group -- sales, currently, are up 5.2 percent.
Testing Theory
Last week I was outside my office and I saw a $5 bill on the ground. Famously, economists say you never see a $5 bill on the ground because someone would pick it up. But instead of picking it up, I stood around watching to see if anyone else would. A bunch of people walked by not noticing it. Then one guy saw it, saw me, and asked if it was mine. I said no it wasn’t, I was just curious what would happen. He laughed and made a joke about economists. Then a second guy came by, picked it up, and said I’d dropped five dollars. I said no, actually it was there before me. He looked around, noticed a homeless guy across the street, said “I think he needs it more than me,” walked over and gave it to him.
While a single test is not proof of anything (expect the strongest of the possible theories), I have certainly had people tell me that I have dropped money. That seems to go against the assumption that rational people will always act to increase their wealth (after all, they could just pick up the bill).
I think that it is worth keeping in mind that the assumptions of economic models are just that. Models can be useful but are rarely ever completely correct.
And Matt's stuff in the same post on the Night Watchman state is simply not to be missed.
Tuesday, October 11, 2011
Update on BoA severance
It turns out that the decision to pay $11 million dollars in severance was voluntary and not required at all by any contract.
Social Justice
SPIEGEL ONLINE: Nevertheless, banks could run into significant problems should they be forced to write down billions in sovereign bond holdings.
Sulik: So what? They took on too much risk. That one might go broke as a consequence of bad decisions is just part of the market economy. Of course, states have to protect the savings of their populations. But that's much cheaper than bailing banks out. And that, in turn, is much cheaper than bailing entire states out.
SPIEGEL ONLINE: Does one of your reasons for not wanting to help Greece have to do with the fact that Slovakia itself is one of the poorest countries in the EU?
SulĂk: A few years back, we survived an economic crisis. With great effort and tough reforms, we put it behind us. Today, Slovakia has the lowest average salaries in the euro zone. How am I supposed to explain to people that they are going to have to pay a higher value-added tax (VAT) so that Greeks can get pensions three times as high as the ones in Slovakia
I think that this is becoming one of the real flashpoints in our economic discourse. I am a huge supporter of pensions. But I can see the potential moral hazard in the Eurozone where making reckless promises can result in being bailed out (and working through your problems can result in being billed for others failure to do so). That sort of "tragedy of the commons" is a much bigger threat to economic stability than I had previously suspected.
We will have some of the same issues between generation here in the United States. There have been proposals to limit Medicare to people who are currently 55 plus. That will mean my generation (which began their careers with a terrible job market) will be playing taxes so that the generation ahead of it (which did comparatively well) can retire at a higher standard of living. These sorts of approaches can be toxic to any social contract.
But I can see Slovakia's position now, even if I am not necessarily in favor of it.
Monday, October 10, 2011
Epidemiology is about communication
Most pancreatic cancers are aggressive and always terminal, but Steve was lucky (if you can call it that) and had a rare form called an islet cell neuroendocrine tumor, which is actually quite treatable with excellent survival rates — if caught soon enough. The median survival is about a decade, but it depends on how soon it’s removed surgically. Steve caught his very early, and should have expected to survive much longer than a decade. Unfortunately Steve relied on a diet instead of early surgery. There is no evidence that diet has any effect on islet cell carcinoma. As he dieted for nine months, the tumor progressed, and took him from the high end to the low end of the survival rate.
Why did he do this? Well, outsiders like us can’t know; but many who avoid medical treatment in favor of unproven alternatives do so because they’ve been given bad information, without the tools or expertise to discriminate good from bad.
Everyone would prefer to avoid surgery -- especially painful, high-risk surgery with an uncertain prognosis. But this seems to be a clear case where better advice could have made a real difference. Unfortunately, the literature is full of spurious findings and it can be hard for even experts to sort these issues out.
The ultimate goal of Epidemiology is to give patients the best (high-quality) evidence available in order to assist them in making optimal decisions. We'll never know if the advice given to Steve Jobs was good or bad, but stories like this highlight how important it is to keep focusing on communication.
Testing teachers
Simple formulas can be “gamed.” That is, employees learn to achieve the objectives in the formula while failing to work toward the longer-term goals of the firm. On Wall Street, we have seen how bonus formulas proved dysfunctional. The older partnership form of organization appears to have provided better incentives.
A government-run system of teacher compensation, based on test scores, would in some ways be the worst of all worlds. It would create incentives for teachers to “game” the system. It would give too much weight to a noisy indicator of performance. As a result, it would do little or nothing to improve accountability or to reward better teachers.
This classic insight is shown in this dilbert comic.
Are we sure that test score based measures are the way to go? Most information technology jobs have the same sort of issues, often solved by comparative rankings and broad evaluations. Even worse, a bad metric drives out the good (meaning it could actually be counter-productive).
The whole post is worth reading.
Sunday, October 9, 2011
More on Executive Compensation
You pay fired executives more in severance than the average American worker will earn in a lifetime. For most people on the outside looking in, this seems like it's from outer space, another world entirely. These numbers just do not exist to regular human beings, they cannot be fathomed.
He also points out the bad timing:
It's not that this isn't your prerogative as a private company - it is. But seriously, numbers like these at a time when you're instituting added fees on customer accounts just sound farcical, almost like you're making these payments to get a reaction out people.
I have been interested in this dynamic for a while. Mostly because I am beginning to see executive compensation as an intriguing form of market failure. After all, let us consider the example of these two executives. What are they being compensated for?
Do executives at banks really add so much value that $5.5 million dollar severance packages are just a way of saying thank you? Is there really no competitive pressure on salaries? Is the supply of potential bankers really this low? Supply side issues seem to be dubious. Are these skills really so rare (and, if they are, how do banks really select for them because the rest of us want to know).
Or is it due to the risk of taking a corporate job instead of being a school teacher? Well, these two executives are not really taking any real risk. Even if this is the last job either one ever holds. they are already well above the typical lifetime earnings curve based on this severance package alone. Debts required to reach this position (like School debt) are simply dwarfed by the size of the payout.
It is a very interesting problem.
Schlock Mercenary
Enjoy!
Friday, October 7, 2011
Free TV blogging -- Why Weigel Broadcasting may be the best business story that no one's covering -- part I
Though the improvement in picture and sound got most of the attention, another aspect of the transition to terrestrial digital was arguably more important, particularly for broadcasters: under the new technology, each station could broadcast multiple subchannels. The situation was analogous to the TV landscape thirty years earlier when cable and satellite stations were exploding on the scene. It's not surprising that someone would try to create the broadcast equivalent of superstations like TBS. What is surprising is who was able to get a channel up and running before any of the competitors were out of the gate.
The name of the channel was ThisTV. It was produced by a regional broadcasting called Weigel, best known for operating the last independent station in Chicago and being the home of the cult favorite Svengoolie -- last of old time horror hosts. Weigel had a content deal with MGM which was not nearly as impressive as it sounds -- Turner had bought out the classic MGM library years earlier -- but MGM still had a lot of films including the catalog of American International, the studio responsible for virtually every drive in movie you can think of from the late Fifties through the early Seventies.
Access to all those AIP films probably had a lot to do with the unique ThisTV brand. Here's how I summed it up earlier:
Weigel are the people behind ThisTV and the exceptionally good retro station MeTV (more on that later). ThisTV is basically a poor man's TCM. It can't compete with Turner's movie channel in terms of library and budget -- no one can (if my cable company hadn't bumped TCM to a more expensive tier I never would have dropped the service), but it manages to do a lot with limited resources using imagination and personality. As a movie channel, it consistently beats the hell out of AMC.
ThisTV has caught on to the fact that the most interesting films are often on the far ends of the spectrum and has responded with a wonderful mixture of art house and grind house. Among the former, you can see films like Persona, the Music Lovers and Paths of Glory. Among the latter you'll find American International quickies and action pictures with titles like Pray for Death. You can even find films that fit into both categories like Corman's Poe films or Milius' Dillinger.
If I ran a TV station, I would definitely combine Bergman and ninjas. I would not, however, run Mario Bava's feature length pulp magazine cover, Planet of the Vampires from twelve till two. Some of us have to get up in the morning.
This mix was in place from the very beginning. The station officially debuted on November 1, 2008 with Spike Lee's She's Gotta Have It but many stations started carrying it a day earlier to take advantage of a day of cheesy Halloween horror films. It was a formula that made a virtue out of cheapness (rarely seen auteur films and drive-in movies both have the advantage of not costing much) and it produced a format that's been running smoothly with remarkably few adjustments for almost three years.
For a small player to identify a new market, develop a concept, negotiate the necessary deals with a content provider (MGM), line up affiliates, make the countless other arrangements that accompany a major launch and to be up and running with a quality product when the support technology first comes online is an impressive accomplishment. But it gets better.
So far we have a solid business story -- small yet nimble company with some good ideas beats big, well-established competitors into a new market. Not exactly the most original piece of journalism but certainly good enough for the front page of the business section. However the story doesn't stop there. Weigel didn't just beat its big and well-financed competitors; it lapped them. Before the next entrant, Tribune/WGN, was able to get its station, AntennaTV on the air, Weigel managed to launch a second channel, the ambitious classic television station, METV. If this weren't enough, AntennaTV is the only one of the three to look slapped together despite having taken far longer to make it to the air (of course, we have no way of knowing how long it took Tribune to see the opportunity and how long it took them to act on it but either way Weigel looks good by comparison).
To put this in context, at least half of this story takes place after the collapse of '08, a downturn that hit advertiser-based businesses particularly hard. Furthermore, the story occurs in an industry that a large number of lobbyists and at least a few pundits were literally trying to kill. There had even been a New York Times op-ed calling for the government to eliminate over the air television and sell off the spectrum.
One of the great memes of the Great Recession has been that uncertainty paralyzes businesses. Even the possibility of a tax increase or some additional regulation -- both extremely mild by historical standards -- are enough to bring the economy to a standstill, but here's a market filled with unknowns under a credible threat of annihilation and we can still find a company like Weigel moving aggressively to establish dominance of it.
That's the other side of uncertainty. It allows companies to substitute boldness and decisiveness for money and market position and take advantage of opportunities that would otherwise be out of their reach.
[also posted at MippyvilleTV]
Thursday, October 6, 2011
CERN disproves global warming!
(The Churchill analogy alone is worth the price of admission)
Equal time for American Public Media
It feels strange talking about good journalism.
The unhappiest place on earth?
“You have 300,000 workers come to the US and they’re just lacking in protections,” Costa said. “Workplace protections, wage protections and we’ve see complaints where employers have been threatening people who complain about their work conditions with deportation.”
In fact, it’s even worse than that. In recent years, J1 workers have reported that their stays in the US were characterized by menial jobs, low wages, filthy living conditions, and a lot of economic exploitation.
J1 workers apply for the program and then pay between $3,000 and $6,000 to a sponsoring organization, accredited by the State Department. The sponsor organization places them with American companies. One of the biggest J1 employers is Disneyland.
“They work on rides, quick service food and beverage, housekeeping, parking attendants, merchandising, lifeguards, dispatch, and most importantly showkeepers- those are the janitors,” said Kit Jonson, a law professor at the University of North Dakota.
Jonson’s been researching the J1 labor force and says it’s become a very clever business strategy for American companies. They save on wages, state and federal taxes, healthcare, housing and pension plans.”
“For Disney those figures end up being really stunning,” Jonson said. “Disney’s saving in wages alone upwards of $18.2 million a year in hiring international workers. So international students are simply a lot cheaper than American labor.”
Both Kit Johnson and Daniel Costa say that especially now, when unemployment is so high, these jobs should be filled by local workers. But J1 workers are more attractive because on top of the cost savings, they’re less likely to put up a fuss. If they do, they’re easy to get rid of. Like a group of J1’s from Russia who came to work as lifeguards in Texas, and ended up begging in the streets when they weren’t paid.
Response to Comments
I agree that the logic of this argument is very strong, and it seems to me that the same argument applies to the morality of punishment.
and the link posted by Stuart Buck seemed to share a common theme. In the link, the authors argue that:
According to data provided by the California Department of Corrections and Rehabilitation, in 1977, parolees who were returned to prison or convicted of new crimes accounted for just 10% of California’s prison population. The percentage topped 20 only once prior to 1980. In 2009, however, the number was an alarming 77%, having held firm between the high 60s and low 80s since 1986.
I think that there is a real point here: vindictiveness is expensive. The previous focus in California prisons on rehabilitation and returning prisoners to society was based around minimizing losses of social capital. This is not to excuse the crimes (as most criminal activity is either selfish, mean or petty), but to point out that a focus on punishment is expensive and not especially good for the prisoners themselves. Clearly something was going right if only 10% of prisoners were coming back into prison. A return rate of 77% might actually indicate that we are simultaneously less safe and making life worse for the imprisoned.
Now, we can always find single examples of people who should never be released. Serial killers with psychiatric issues come immediately to mind. But we should not let the extreme example determine the policy for the median prisoner. Similarly, we have a 100% chance that at least one person on parole will re-offend. That would be true even if the crime rate in the parolees was less than that in the general population.
This is a hard issue. I have strong and irrational feelings of fear about many convicts. But the focus on punishment over rehabilitation may well have been a mistake.