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Intergroup dynamics refers to the behavioral and psychological relationship between two or more groups.

This includes perceptions, attitudes, opinions, and behaviors towards one ’ s own group, as well as those towards another group.

In some cases, intergroup dynamics is prosocial, positive, and beneficial ( for example, when multiple research teams work together to accomplish a task or goal ).

In other cases, intergroup dynamics can create conflict.

For example, underlying the 1999 Columbine High School shooting in Littleton, Colorado, United States, intergroup dynamics played a significant role in Eric Harris ’ and Dylan Klebold ’ s decision to kill a teacher and 14 students ( including themselves ).