Mind: Learning How the Poor Think

The brain has limited capacities. If you increase demands on one sort of question, it performs less well on other sorts of questions.

Shafir and Mullainathan gave batteries of tests to Indian sugar farmers. After they sell their harvest, they live in relative prosperity. During this season, the farmers do well on the I.Q. and other tests. But before the harvest, they live amid scarcity and have to think hard about a thousand daily decisions. During these seasons, these same farmers do much worse on the tests. They appear to have lower I.Q.'s. They have more trouble controlling their attention. They are more shortsighted. Scarcity creates its own psychology.

Princeton students don't usually face extreme financial scarcity, but they do face time scarcity. In one game, they had to answer questions in a series of timed rounds, but they could borrow time from future rounds. When they were scrambling amid time scarcity, they were quick to borrow time, and they were nearly oblivious to the usurious interest rates the game organizers were charging. These brilliant Princeton kids were rushing to the equivalent of payday lenders, to their own long-term detriment.

Many people don't sign up for the welfare benefits because they are intimidated by the forms. Shafir and Mullainathan asked some people at a Trenton soup kitchen to relive a moment when they felt competent and others to recount a neutral experience. Nearly half of the self-affirming group picked up an available benefits package afterward. Only 16% of the neutral group did.

For more, see The Unexamined Society by David Brooks, July 7, 2011 at NYTimes.com.