Abstract
Three determinants of the magnitude of interpersonal aggression were investigated: attack, drug-induced arousal, and information regarding arousal. Under the guise of a stress and problem-solving experiment, 72 male college students participated in a 2 by 2 by 2 factorial of Arousal (Dexedrine)/No Arousal (placebo) by Information (“stimulant” or “vitamin”) by Attack/No Attack. After having their solution to a problem evaluated either favorably or unfavorably via a digital counter by a confederate, Ss used electric shocks to evaluate a solution supposedly produced by the confederate. Attack and arousal each reliably increased the amount of shock delivered. Ss told that they had received a stimulant rated themselves significantly higher in tremor and palpitation but not in anger and, unexpectedly, were slightly higher in aggression than the other Ss.
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