Abstract
Prosocial behavior is negatively associated with psychopathic traits and paradigms which measure prosocial behavior in the laboratory may be useful in better understanding moderators of this association. We revised a previously validated game of prosocial behavior by including a new trial type (i.e., trials where the participant will lose money and the charity will gain money). This version of the game was administered online and participants were randomized to group (exposed to a control stimulus video or a video used to elicit moral elevation, i.e. a positive response to witnessing another's act of kindness). We used repeated game administration to test whether a moral elevation stimulus affected game behavior and moderated the negative association between psychopathic traits and prosocial behavior. Prosocial behavior on the new trial types added in this revised game correlated strongly with prosocial behavior on the old trial type (i.e., trials where the participant will gain money and the charity will lose money; r = 0.71; p-value<0.001; n = 485). Graphing trial acceptance rates by trial characteristics demonstrated expected patterns of behavior. Number of prosocial choices on the game correlated with psychopathic trait score (Levenson Factor 1 score; r = -0.52; p-value<0.001). Game repetition with a control stimulus in between runs, supported high immediate test-retest reliability of overall game behavior. Exposure to the moral elevation stimulus in between runs did not affect game behavior nor moderate the association between psychopathic traits and prosocial behavior. Choices on this revised game of prosocial behavior, which can be administered online, are associated with psychopathic traits scores. The game appears to have high immediate test-retest reliability. Exposure to the moral elevation stimulus did not affect prosocial behavior or impact the relationship between psychopathic trait scores and prosocial behavior. Future research should continue to test potential moderators of this relationship. Limitations of the current study are discussed.
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