investigating effects of team diversity on team commitment and team identity and mediating role of team size

today, teams are a key resource for learning and work in organizations and this has increased the importance of designing team-based structures. diversity management teams is something that managers should consider when team building. the effect of team diversity on team outcomes and its moderating variable,hasn’t completely identified yet in iran. therefore, given the importance of, this study examined the effects of team diversity (including diversity in age, gender, education, ethnicity and islamic work ethic) on team commitment and team identity and moderating role of team size in this relationship are paid. for this purpose, members of the project teams productive and advisory organizations tehran city are selected as the statistical community and then the 202 number of study questionnaires were distributed between samples that after gathering the questionnaires، they were decreased to 54 teams by using of integration method to convert individual level data to group level data. the results of this study showed that islamic work ethic has a positive and significant effect on team cohesiveness. also team cohesiveness has a positive and significant effect on team identity. on the other hand, team size doesn’t moderate the relation among team diversity, conflict and team cohesiveness.