In the context of group roles, which of the following is a difference between an isolator and a dominator? an isolator does not do his or her fair share of the work in a group, whereas a dominator constantly criticizes and complains about others' work in the group. an isolator pursues only the social aspect of a group, whereas a dominator makes sure everyone in the group gets to talk and be heard. an isolator is physically present but fails to participate in group activities, whereas a dominator speaks too often and too long in a group.