Robert Kurzban of the School of Arts and Sciences says new analysis calls into question the hypothesis that will power has a biological fuel.
Sex, Drugs and Moral Goals: A Penn Psychology Study of Reproductive Strategies and Recreational Drug Use
PHILADELPHIA –- Why is there so much disagreement about whether using recreational drugs is morally wrong? A University of Pennsylvania psychology study shows that the debate about drugs might really be about sex.
The study compared two competing theories.
One theory -- the conventional wisdom in political science -- sees drug attitudes as primarily coming from people's political ideology, level of religious commitment, and personality, for example, openness to experience.
University of Pennsylvania Analysis: Contrary to Popular Models, Sugar Is Not Burned by Self-Control Tasks
PHILADELPHIA –- Contradicting a popular model of self-control, a University of Pennsylvania psychologist says the data from a 2007 study argues against the idea that glucose is the resource used to manage self control and that humans rely on this energy source for will power.
The analysis, conducted by Robert Kurzban and published in the current issue of the journal Evolutionary Psychology, shows that evidence previously presented in favor of the claim that the brain consumes extra glucose when people exert self-control shows no such thing.
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June 9, 2010
Dr. Lisa A. Murphy
Assistant Professor of Toxicology, Department of Pathobiology
School of Veterinary Medicine, University of Pennsylvania