Two experiments using female subjects investigated the effects of mood and self-focused attention on the willingness to help another. Experiment 1 induced a positive, negative, or neutral mood and also two kinds of high self-awareness (by either the mirror procedure or requiring essays) as well as a low self-awareness condition. Experiment 2 used a different technique to induce the three moods and also established either high or low attention to the self with the mirror procedure. In both studies, self-awareness did not interact significantly with mood in affecting the subjects' reported feelings, although there were indications in Experiment 2 of an intensification of the negative mood under self-focus. Furthermore, in both studies self-awareness operated together with the positive mood to increase the subjects' effort in behalf of the supplicant, whereas the joint operation of self-focus and negative mood was much weaker. Also in the second experiment, self-awareness raised the frequency of positive ideas about the self in the happy subjects and increased the frequency of negative selfideas in the negative mood group. In a multiple regression analysis, these frequencies of positive and negative ideas about the self, but not a mood index, successfully predicted the amount of work the subjects did for the supplicant.People's willingness to help others varies greatly from one situation to another. Depending on the conditions confronting them, they can be quick to aid a person in distress on some occasions but be reluctant to provide assistance at other times.This research is concerned with two of the conditions influencing helpfulness: mood and self-awareness. Although there is now considerable evidence that both of these factors can affect the motivation to help, it is not entirely clear whether these determinants increase or dampen this motivation.