其他摘要：The aim of this study was twofold: 1) to analyze the relationship between role efficacy, role clarity, and role performance effectiveness asa subjective measure of performance, and 2) to examine role clarity as a moderator of the role efficacy-performance relationship, in both an offensiveand defensive context in football. Two hundred and ninety-five male soccer players between 12 and 16 years old (M= 14.01, SD= 1.09) completed thequestionnaires assessing the variables of the study. Results showed that the players who reported higher role clarity also reported higher role efficacyand performed better than those with lower role clarity. Also, role clarity was a moderator for defensive role functions; specifically, role efficacy was apositive predictor of performance only when role clarity was high.
其他关键词：Role efficacy; Role clarity; Role performance; Moderator; Grassroots.
