The causes cited by 218 participants for the hypothetical positive and negative life events on the Attributional Style Questionnaire (ASQ) and the dimensional ratings of the causes were examined to determine the match between the dimensional and categorical definitions of attributional style. Optimists (n = 105) and pessimists (n = 113) used different types of causes to explain the negative ASQ events, but not the positive events. However, optimists' and pessimists' causal explanations shared a number of features. The findings suggest that attributional styles depend, in part, on the event being explained and demonstrate that the ASQ events elicit specific types of causes.