Hogg, M.A.

group leadership leader identity van knippenberg knippenberg leadership effectiveness follower member psychology research behavior theory prototypicality group members effectiveness process organization negotiation relationship effect press journal study representative relation participant analysis aspect identi fication personality review transformational leadership people ingroup identi group membership leader prototypicality perception performance identification outgroup fication self-construal behaviour identity processes transformational group norm membership self-efficacy model turner self-concept management identity model collaboration shamir uncertainty decision trust motivation follower self-concept university support efficacy message group-oriented level fairness cremer identity theory perspective simol interest change proposition influence context example psychology bulletin