The impact of psychological capital on knowledge sharing with mediating role of psychological safety: Sharif University of Technology Case

The impact of psychological capital on knowledge sharing and the mediating role of percieved pschological safety is investigated in this study. The research method was a descriptive survey. The population included non-faculty employees of Sharif University of Technology. A sample of 234 individuals were selected. In order to collect data, three questionnaires were used, including Psychological Capital of Luthans et al.(2007), Percieved Psychological Safety of Edmondson(1999) and Knowledge Sharing of Hooff and Ridder(2004). Questionnaires validity was confirmed by using content validity and their reliability was calculated 0.78, 0.71 and 0.80 respectively using Cronbach's alpha. The results showed that psychological capital had a positive and significant impact on percieved psychological safety and knowledge sharing. In addition, the significant impact of psychological safety on knowledge sharing was confirmed. The results also indicated that percieved psychological safety mediates the impact of psychological capital on knowledge sharing. The Empirical model extracted from data analysis is largely consistent with the conceptual model.