Summary The present experiment demonstrated that Ss led to believe that an external cause is responsible for their arousal at seeing a woman in pain will be less likely to help her than those attributing their arousal to sympathy for her. Ten men and 10 women were told that exposure to an aversive noise would produce symptoms of physiological arousal; another 10 men and 10 women were told that irrelevant symptoms might occur. Those expecting irrelevant symptoms from noise bombardment helped a woman with a hurt knee significantly more than those expecting the noise to cause symptoms typical of arousal; these results provided support for both Schachter's cognitive attribution theory of emotion and Aronfreed's empathy theory of altruism.
Harris et al. (Wed,) studied this question.