Um... you might be thinking of Walter Mischel's marshmellow experiment in the 1960s? That was a group of 4-year-olds given the choice between eating one now or two in 20 minutes. Depending on whether or not they could wait, they were classified into two groups. They then followed up into adolescence. Kids who could wait were demonstrably better adjusted, more dependable, and had higher SAT scores.
A little poking around with Google shows that indeed, people have been replicating the marshmellow experiment with M&Ms. But it doesn't sound as if they are doing a good job...
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mmmag
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Date: 2010-05-13 12:46 am (UTC)A little poking around with Google shows that indeed, people have been replicating the marshmellow experiment with M&Ms. But it doesn't sound as if they are doing a good job...