willpower

In a new New York Times Magazine piece, John Tierney pulls together the results of several studies that suggest willpower is finite and decisionmaking exhausting. While these findings are important in many ways (Tierney leads off with an example from the criminal justice system), I was especially interested in the implications for dieting. The whole article is well worth a read, but in a nutshell, researchers have found that subjects' willpower can be depleted by resisting temptation and be restored by glucose -- but not by artificial sweetners that provide less energy. When subjects'…