Like Aronson and His Colleagues (Aronson & Bridgeman,1979; Aronson

Like Aronson and his colleagues (Aronson & Bridgeman,1979; Aronson & Thibodeau,1992) ,Samuel Gaertner and his colleagues (1990) have evaluated the effectiveness of cooperative learning technique.Gaertner and his colleagues believe that one reason why such techniques work is that small,cooperative learning groups

A) break down in-group and out-group categories into a perception of a single group.
B) are more likely to follow egalitarian norms.
C) provide for contact between members of different racial and ethnic groups.
D) are more pleasant and thus reduce academic frustration.