Individuals such as Mohandas Gandhi and Martin Luther King, Jr. successfully employed nonviolent strategies to attain significant political goals. Despite the implications of these achievements, psychologists rarely have studied predispositions to nonviolent behavior empirically. This study investigated the relationships among nonviolent personality predispositions, moral reasoning, and values among adolescents and adults in the western United States. Nonviolent predispositions were interpreted in terms of their relationships with the universal motivational domains of values and principled reasoning. Recommendations are made for future research on nonviolent personality predispositions. A 24-item list of references is included. (Author/DB)