In two studies, the authors investigated the impact of threat on the perception of extremity and homogeneity among the members of a group. They relied on the Group Attribution Error paradigm and asked participants to estimate the attitudes in a group of voters. Depending on the condition, the decision rules were such that the proposition allegedly passed or failed. The degree of threat of the group was varied by informing participants that the group represented a small (4%) or substantial (40%) proportion of the population living in the area. Consistent with the Group Attribution Error literature, the outcome of the vote influenced participants’ inferences about the extremity of the voters’ attitude. More positive (negative) attitudes were inferred in the case of a positive (negative) outcome of the vote. This effect was qualified by the level of threat. Participants inferred relatively more extreme and more homogeneous attitudes among the members of a threatening group.
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