Intergroup conflict was reduced in the Robber's Cave study through _____________.

A) A superordinate goal
B) Positive group stereotyping
C) Out-group homogeneity
D) Reducing the ultimate attribution error

Superordinate Goal

In intergroup conflict, an objective held in common by all conflicting groups that cannot be achieved by any one group without the supportive efforts of the others.

Ultimate Attribution Error

A perceptual bias occurring in intergroup relations. Negative behaviors by out-group members are attributed to stable, internal factors such as undesirable personal traits or dispositions, but positive behaviors by out-group members are attributed to unstable, external factors such as situational pressures or luck. As a result, in-group observers will blame the out-group for negative outcomes but will not give it credit for positive outcomes.

Out-group Homogeneity

The perception that members of a group different from ours are more similar to each other than they actually are, often leading to stereotyping.