Abstract
How does similarity in the views of most members in each of two groups modify the influence of the minority within each group? Similarity of the majority's view between groups (Similar/Dissimilar) and the Outcome of a prior intergroup cooperative act (Success/Failure) were varied. The results suggested the importance of a majority's readiness for acknowledgement of other views and the value of the assumption that the two groups were psychologically one group. A minority exerted less influence on a majority after a failure than after a success. Similarity was effective only in the Failure condition: A minority had the least influence in the Similar-Failure condition.
