Friday, August 28, 2009

Extrinsic Motivation - Destroys Creativity

A blog post at Presentation Zen points to a TED talk by Daniel Pink

He argues, based on decades of psychology research, that reward-based motivation only works for relatively simple, non-creative tasks. For complex tasks that require creativity, rewards reduce performance.

The solution:
  • Autonomy: The urge to direct our own lives.
  • Mastery: The desire to get better at something that matters.
  • Purpose: The yearning to do what we do in the service of something larger than ourselves.

Thursday, August 27, 2009

Patient Needs versus Profit

Article by Atul Gawande at The New Yorker

When you look across the spectrum from Grand Junction to McAllen—and the almost threefold difference in the costs of care—you come to realize that we are witnessing a battle for the soul of American medicine. Somewhere in the United States at this moment, a patient with chest pain, or a tumor, or a cough is seeing a doctor. And the damning question we have to ask is whether the doctor is set up to meet the needs of the patient, first and foremost, or to maximize revenue [emphasis added].

I found the Atul Gawande article from this article, which talks about the 3 key parts of the news that you usually don't get (historical context/big picture, sources of the information, what we don't know).

What Gawande did was to structure his search for truth as a quest narrative. Instead of hiding the details about how he comes by his information, he makes that the very focus. Along the way, he makes us apprentices in his quest for truth. We finish the article with a highly refined sense of how Gawande has acquired and verified the information he presents, as well as a framework for further inquiry of our own.

Back to Gawande's article, this is a great analogy and really hits home for me (pun was NOT deliberate):

Providing health care is like building a house. The task requires experts, expensive equipment and materials, and a huge amount of coördination. Imagine that, instead of paying a contractor to pull a team together and keep them on track, you paid an electrician for every outlet he recommends, a plumber for every faucet, and a carpenter for every cabinet. Would you be surprised if you got a house with a thousand outlets, faucets, and cabinets, at three times the cost you expected, and the whole thing fell apart a couple of years later? Getting the country’s best electrician on the job (he trained at Harvard, somebody tells you) isn’t going to solve this problem. Nor will changing the person who writes him the check.

Tuesday, August 4, 2009

A great analysis of recission

Article at Taunter Media

Half of the insured population uses virtually no health care at all. The 80th percentile uses only $3,000 (2002 dollars, adjust a bit up for today). You have to hit the 95th percentile to get anywhere interesting, and even there you have only $11,487 in costs. It's the 99th percentile, the people with over $35,000 of medical costs, who represent fully 22% of the entire nation's medical costs. These people have chronic, expensive conditions. They are, to use a technical term, sick.

An individual adult insurance plan is roughly $7,000 (varies dramatically by age and somewhat by sex and location).

It should be fairly clear that the people who do not file insurance claims do not face rescission. The insurance companies will happily deposit their checks. Indeed, even for someone in the 95th percentile, it doesn't make a lot of sense for the insurance company to take the nuclear option of blowing up the policy. $11,487 in claims is less than two years' premium; less than one if the individual has family coverage in the $12,000 price range. But that top one percent, the folks responsible for more than $35,000 of costs – sometimes far, far more – well there, ladies and gentlemen, is where the money comes in. Once an insurance company knows that Sally has breast cancer, it has already seen the goat; it knows it wants nothing to do with Sally.

If the top 5% is the absolute largest population for whom rescission would make sense, the probability of having your policy cancelled given that you have filed a claim is fully 10% (0.5% rescission/5.0% of the population). If you take the LA Times estimate that $300mm was saved by abrogating 20,000 policies in California ($15,000/policy), you are somewhere in the 15% zone, depending on the convexity of the top section of population. If, as I suspect, rescission is targeted toward the truly bankrupting cases – the top 1%, the folks with over $35,000 of annual claims who could never be profitable for the carrier – then the probability of having your policy torn up given a massively expensive condition is pushing 50%. One in two. You have three times better odds playing Russian Roulette.

Wednesday, July 22, 2009

Happiness

Eric Wiener, on Rick Steve's show, as blogged by GetRichSlowly

There have been studies that show that people are materialistic — irrespective of how much money they actually have — people who are materialistic tend to be less happy than people who are not.

Close relationships are a better predictor of happiness than monetary wealth. “Happiness is other people,” Weiner says. “Our happiness is determined in large part by our quality and quantity of relationships with others.

Let’s talk about Denmark, for instance, because Denmark ranks consistently in the top three for happiest countries in the world. The Danes have low expectations. In survey after survey, they’re asked about expectations, and they have relatively low expectations. We Americans have very very high expectations. And I think that partly explains the discrepancy.

I think if you have low or moderate expectations, you’re less likely to be disappointed. You’re more likely to be satisfied or content. You’re more likely to be happy.

Sunday, July 19, 2009

Craftsmanship, not engineering

Post at Coding Horror, "Software Engineering: Dead?"

What DeMarco seems to be saying -- and, at least, what I am definitely saying -- is that control is ultimately illusory on software development projects. If you want to move your project forward, the only reliable way to do that is to cultivate a deep sense of software craftsmanship and professionalism around it.

The guys and gals who show up every day eager to hone their craft, who are passionate about building stuff that matters to them, and perhaps in some small way, to the rest of the world -- those are the people and projects that will ultimately succeed.

Everything else is just noise.

Friday, July 17, 2009

Statistics Resources

Cancer Genomics Tools from Washington University (WUSTL) includes a list of R functions that can be used for various statistical tests.

UCLA's Academic Technology Services department has a page with R links and information. In particular, they have a list of analyses and sample code.

Wednesday, July 15, 2009

Dunbar's Number and Security

Post by Bruce Schneier on his blog, "Security, Group Size, and the Human Brain"

In a 1992 article, Dunbar used the correlation observed for non-human primates to predict a social group size for humans. Using a regression equation on data for 38 primate genera, Dunbar predicted a human "mean group size" of 148 (casually rounded to 150), a result he considered exploratory due to the large error measure (a 95% confidence interval of 100 to 230).

Several layers of natural human group size
3-5: Clique - people you would turn to in times of severe emotional distress
12-20: Sympathy group - people with whom you have special ties
30-50: Typical size of hunter-gatherer overnight camps
150: Approximate maximum number of co-workers
500: Megaband
1500: Tribe

Note: All of these numbers have very large confidence intervals.

These numbers (and particularly the ~150 number) are important because of their effects on organizational behavior.

Coherence can become a real problem once organizations get above about 150 in size. So as group sizes grow across these boundaries, they have more externally imposed infrastructure -- and more formalized security systems.

Small companies can get by without the internal forms, memos, and procedures that large companies require; when does what tend to appear?