Soc*1100 chapter 7 [groups & organizations] notes (by: akul bhatt) P a g e | 1: social groups: Social groups: the cluster of people with whom we interact in our daily lives: could be two people who identify with and interact with one another, or could be huge corporations (i. e. formal organizations) Group leadership: secondary groups are much more likely to have group leaders than primary groups. There are two types of leaderships: instrumental leadership: group leadership that focuses on the completion of tasks. Usually builds secondary relationships with other members: expressive leadership: group leadership that focuses on the group"s well-being. Usually builds primary relationships with other members. Group conformity: group power induces pressure to shape human behaviour and influences the conduct of its members by promoting conformity. Refer to: reena virk incident: a group of 8 teenagers in vancouver island in 1997 brutally beat and drowned, while another 10 watched and did nothing to intervene.