the role of relational psychological contract in increasing the relational social capital and its impact on knowledge sharing behavior

in era of service economy, organizations' success depends significantly on providing quality services. therefore, organizations are in the idea of employing tools such as knowledge management to survive. human activities such as knowledge sharing among organizational members are the foundation of knowledge management in organizations. recent studies have shown that the relational psychological contract and social capital motivate the individuals' propensity to share and create the new knowledge in organizations. this study investigates the mediating role of interpersonal trust and collaboration as important components of relational social capital, in the relationship between relational psychological contract and knowledge sharing amongst employees of ferdowsi university of mashhad. data was gathered through questionnaires used in previous studies reaffirming the validity and reliability and by conducting random sampling. from collected questionnaires, 210 were confirmed to be valid for analysis. research type was survey-analytical and based on structural equation modeling. findings illustrated full mediation of collaboration in the relationship between relational psychological contract and knowledge sharing, while the mediation of interpersonal trust was not verified in this research.