Prosociality and Personality: Perceived Efficacy of Behaviors Mediates Relationships between Personality and Self-Reported Climate Change Mitigation Behavior.

The included studies examined the relationship between climate change mitigation behavior (CCB) and personality. In Study 1, 1089 US collegians completed a measure of the Big Five and indicated how often they engaged in five CCBs. Engaging in each CCB was regressed on the Big Five. These analyses found openness was positively related to all five CCBs, neuroticism was positively related to four of five CCBs, and extraversion was positively related to three CCBs. In Study 2, 1688 US collegians completed the same measures as in Study 1 with two additional CCBs. They also indicated how efficacious they thought each CCB was. Each CCB was regressed on the Big Five. These results largely replicated those of Study 1 and also found that conscientiousness was positively related to five of seven CCBs. Mediational analyses found that all relationships between personality factors and CCB were mediated by the perceived efficacy of the CCB. The present results suggest that efforts to increase climate change mitigation behavior need to take into account the perceived efficacy of such behaviors.