Positive Prosocial behaviors are one of the most crucial challenges that face human resources management nowadays specially within a very dynamic work environment. It leads to many positive consequences on both individual and organizational levels; therefore, this study aimed to determine the moderating role of paternalistic leadership' dimensions (Authoritarian, Benevolent, and Moral) on the relationship between psychological entitlement and prosocial behaviors of faculty' assistants at the faculties of Zagazig University. Using a survey list, the primary data for the current study was collected by applying a stratified random sample of 327 sample units in seven faculties of Zagazig University. The simple linear regression method was utilized to test the first hypothesis of the study, and it was found that there are a negative significant relationship between psychological entitlement and prosocial behaviors among sample units; this result was explained through the theory of affective events and the cognitive theory of psychological stress and coping in the study community. The multiple linear hierarchical regression method was also applied to test the hypotheses from the second to the fourth, and the results revealed that the benevolent and the ethical leadership styles interact with psychological entitlement in motivating the faculty' assistants to involve in prosocial behaviors, while the authoritarian leadership style interacts with psychological entitlement in reduce involving in those behaviors, and these relationships are explained by a new approach; called the "Pygmalion effect". Results were discussed; recommendations, limitations, and future research were presented