Seifallah Andayesh

Introduction: The purpose of this research is to examine the impact of emotional intelligence on knowledge hiding, with the mediating role of job stress, among faculty members of Tehran University of Medical Sciences. Methodology: The research method is descriptive and survey-based, and in terms of its objective, it is applied. The statistical population consists of faculty members of Tehran University of Medical Sciences, and the research sample includes 345 individuals selected through random sampling. The data collection tool used to measure knowledge hiding was the questionnaire by Serenko and Bontis (2016), which included 12 items divided into three sections: evasive hiding, playing dumb, and rationalized hiding. To assess emotional intelligence, the 16-item emotional intelligence questionnaire by Wong and Law (2002) was used. Job stress was measured using the 4-item job stress questionnaire by Netemeyer et al. (2004), whose reliability was confirmed through Cronbach's alpha and its validity through content and discriminant validity. Data analysis was conducted using descriptive statistics such as frequency distribution, and inferential statistics, including structural equation modeling via Smart PLS software. Findings: The results showed that emotional intelligence has a significant negative effect on knowledge hiding and also negatively affects job stress. Job stress, in turn, has a significant positive effect on knowledge hiding. Conclusion: The findings indicate that job stress acts as a full mediator in the relationship between emotional intelligence and knowledge hiding