Objectives Researchers have examined how leaders' representation of shared identity content allows them to mobilize group members towards success in competitive tasks. However, research is yet to determine the psychological and physiological implications of shared identity content with a leader when approaching competitive tasks. The present research addresses this gap within a two-phase experimental study, examining the effect of shared identity content on follower intentional mobilization, self-efficacy, perceived control, approach and avoidance goals, cardiovascular challenge and threat and motor performance within a competitive task. Design A 2 X 2 between-participants two-phase experimental design, with two shared and two non-shared co...