Twenty-one European and American researchers contribute their thoughts on a variety of topics relating to minority influence. The authors grapple such issues as the power of minorities to provide social change; the minorities' capacity to induce divergent thinking; group polarization; the place of historical method and the importance of field study. Contributions are grouped into three sections representing theory, limits of study, and methods. Some examples: In part one, Crano analyzes the role of social comparison processes and provides an integrative model. In part two, Worchel argues that groups evolve over time in a predictable manner and that the impact of the minority will depend on the stage of group development. In part three, Personnaz and Personnaz explain the importance of the spectrometer method.