Abstract：The purpose of this study was to examine the predictive utility of personal attitudes and social influences on poor sportspersonship in the athletes of elementary schools. Participants in this study were consisted of total 151-elementary school student athletes from 12-different elementary schools of north region of Taiwan. Among them 86 were males and 65 were females, ranging from grade 5 and 6. In this study we used a questionnaire on sports experience which included the scales on the following 7 categories: athletes' poor sportspersonship attitudes and behaviors, coaches and spectators' poor sportspersonship behaviors, team poor sportspersonship norms, coaches and parents' sportspersonship norms. Data retrieved from this research were analyzed using t-test, Pearson's correlation and multiple-regression analyses. The results shown that: (1) Males exhibited poorer sportspersonship attitudes than females. (2) Self-reported poor sportspersonship behaviors were predicted by perceived coaches and spectators' poor sportspersonship behaviors followed by poor team sportspersonship norms and coaches' sportspersonship norms. (Full text)