Does it matter if your professor grades your paper when tired or hungry?

What if your professor suffers from decision fatigue? What if you do?   Nice review by John Tierney of psychology studies on decision-making and self-control.  “Decision fatigue is the newest discovery involving a phenomenon called ego depletion, a term coined by [FSU psychology professor] Roy F. Baumeister in homage to a Freudian hypothesis. Freud speculated that the self, or ego, depended on mental activities involving the transfer of energy.  … Freud’s energy model of the self was generally ignored until the end of the century, when Baumeister began studying mental discipline in a series of experiments, first at Case Western and then at Florida State University. These experiments demonstrated that there is a finite store of mental energy for exerting self-control. … Willpower turned out to be more than a folk concept or a metaphor. It really was a form of mental energy that could be exhausted.”  More here.

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