Mediating role of organizational self-esteem in relation between social undermining and organizational silence among faculty members of Birjand University

The aim of this study was to investigate the mediating role of organizational self-esteem in the relationship between social undermining and organizational silence. Method of research was descriptive-correlational. The statistical population of the study included 323 faculty members of Birjand University in the academic year of2017-2018. The sample size was estimated at 175 people using Morgan table and their selection was done using simple random. In order to measure the organizational silence variable, the questionnaire Vendine et al. (2003) used the Duffy questionnaire (2002) to measure social undermining and Peers et al (1989) questionnaire was used to measure organizational self-esteem. The reliability of the questionnaires was verified using Cronbach's alpha coefficient and was 0/93,0/95 and 0/96. Data analysis was performed at descriptive and inferential levels (Pearson correlation, analysis of variance and structural equation modeling). It was done with the help of SPSS and Amos software. The results showed that the relationships between research variables were significant at the level of 0.05 . So by increasing a standard deviation in the score of social undermining, organizational silence will increase by 0.27 standard deviation and by increasing a standard deviation in organizational self-esteem. , Organizational silence 0.34 - Standard deviation will be reduced. In addition, organizational self-esteem plays a mediating role between social undermining and organizational silence. The pattern of structural equations had a good fit and all the fit indices of the pattern were in the acceptable range. According to the research findings, it can be said that, since abrasive behaviors lead to an increase in unhealthy behaviors and thus reduce positive and constructive interactions, so organizations, including universities, need to reduce and eliminate this Behaviors try.