leadership effectiveness among nurse managers and its relationship with extrovert/introvert personality

background: success in patient care and gain credit for the hospital depend on nurse staff competent and appetency, so they must be lead in suitable manners and it is nurse manager's duty that must have suitable personality and competency for powerful leadership. the purpose of this study is to assess the effectiveness of leadership and its relationship with extrovert/introvert personality. methods: this is a descriptive correlation study. samples were all 128 nurse managers of hospitals related to isfahan university of medical science that were selected through census method. data collection tool was questionnaire and data were analyzed by spss software. results: findings showed that majority of samples were extrovert between 50 to 75 percent, also most of the managers had powerful leadership effectiveness and there was a direct and meaningful correlation between leadership effectiveness and extroversion in supervisors (r = 0.42, p = 0.01) and head nurses (r = 0.46,  p = 0.0001). conclusion: the correlation between leadership effectiveness and extroversion in supervisor and head nurse groups may be related to their various communications with others and different units employees. key words: nurse manager, leadership effectiveness, personality.