Develop a Structural Model to explain prosocial behaviors based on belonging motivation and sensitivity to rejection mediated by social trust

Prosocial behavior is one of the structures that has been seriously considered in social psychology and can be influenced by various factors. Hence, the purpose of this study was develop a structural model to explain prosocial behaviors based on affiliation motivation and sensitivity to rejection mediated by social trust. The research method was correlational and structural equation modeling. The statistical population of the study was all students of Bu Ali Sina University in the academic year 1399-1400, that 387 people was selected by random cluster sampling. The instruments used in this study was include scales of Caprara et al. (2005) prosocial behavior, Saffarinia & Sharif (2010) social trust, affiliation motivation of Cuadrado et al. (2016) and Danny and Foldman (1996) rejection sensitivity. The results showed that the conceptual model developed had a good fit with the data. The results of structural relationships of the model showed that affiliation motivation and rejection sensitivity have a direct and significant effect on social trust (p <0.01) and prosocial behavior (p <0.01). Also, social trust had a direct and significant effect on prosocial behavior (p <0.01). The results of indirect relationships showed that affiliation motivation and rejection sensitivity mediated by social trust have a significant effect on prosocial behavior (p <0.01). Based on the results, the affiliation motivation and the sensitivity to rejection affect social trust and prosocial behaviors. Therefore, by developing programs to educate and increase affiliation motivation and reduce sensitivity to rejection in individuals, we can expect improvement in their prosocial behaviors.