According to Social Psychologist Irving Janis' Theory on "Groupthink," Members

According to social psychologist Irving Janis' theory on "groupthink," members usually want to be "team players." They may not want to be the ones who undermine the group's consensus or who challenge the group's leaders.Consequently,members often limit or withhold their opinions and focus on consensus rather than exploring all of the options and determining the best course of action.