… stereotypes are not inaccurate. There are many different ways to test for the accuracy of stereotypes, because there are many different types or aspects of accuracy. However, one type is quite simple — the correspondence of stereotype beliefs with criteria. If I believe 60% of adult women are over 5′ 4″ tall, and 56% voted for the Democrat in the last Presidential election, and that 35% of all adult women have college degrees, how well do my beliefs correspond to the actual probabilities? One can do this sort of thing for many different types of groups.
And lots of scientists have. And you know what they found? That stereotype accuracy — the correspondence of stereotype beliefs with criteria — is one of the largest relationships in all of social psychology. The correlations of stereotypes with criteria range from .4 to over .9, and average almost .8 for cultural stereotypes (the correlation of beliefs that are widely shared with criteria) and.5 for personal stereotypes (the correlation of one individual’s stereotypes with criteria, averaged over lots of individuals). The average effect in social psychology is about .20. Stereotypes are more valid than most social psychological hypotheses.
It’s not as if this is new, or in general outline even two years old. It’s roughly as old as human culture, in fact. Generalization is what pragmatic intelligence is for (which means it’s what intelligence in general has been kept around for). Regardless of where we find ourselves culturally right now, this is a point of common sense that simply can’t be forgotten forever.