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The dispositional and structural correlates of volunteerism were examined in a panel study. AIDS service organization volunteers answered questions about affect toward the organization, organizational commitment, motives for volunteering, and a prosocial personality orientation. These measures were used to predict 4 volunteer-related behaviors. Length of service was weakly correlated with the 3 other volunteer behaviors. Altruistic motives and prosocial personality characteristics predicted several of the volunteer behaviors. Initial levels of volunteer activity and organizational commitment also predicted final levels of volunteer activity, but these effects were mediated through intermediate levels of volunteer activities. The findings are discussed within the context of the volunteer process model and role identity models of volunteerism.
Penner et al. (Sun,) studied this question.