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1. Transformational and transactional leadership styles, followers' positive and negative emotions, and performance in German nonprofit orchestras2. Age differences between leader and followers as a moderator of the relationship between transformational leadership and team performance 3. Linking Transformational Leadership and Team Performance: A Conflict Management Approach 4. MEASUREMENT OF THE INTERACTIVE EFFECTS OF LEADERSHIP STYLE AND GROUP STRUCTURE UPON GROUP PERFORMANCE 5. Ethical leadership and job performance in China: The roles of workplace friendships and traditionality【年份(必填)】