Relationship between Role Ambiguity and Aggression Amount among Football Players in Iranian Premier League

This study aimed to investigate the relationship between role ambiguity and aggression amount among football players in Iranian premier league. This was a descriptive–correlational study. The study population consisted of three teamseach with 72 players, mean age 26.07 ± 4.07 yearsin football premier League in 2013-2014. The sample was selected using convenient sampling method. The results showed that there was a significantrelationship between offensive role ambiguities with aggression in football players. The regression results showed that offensive role ambiguity dimensions significantly predicted the aggression among football players.Therefore, it was concluded that the more players understand their responsibilities and roles, the less aggressive behavior they will show.