Stereotype accuracy is one of the largest and most replicable effects in all of social psychology. It took social psychology nearly a century to recognize that not only had it been declaring stereotypes to be inaccurate on the basis of little data, but once the data started to come in, to accept that this data often (though not always) demonstrated moderate to high stereotype accuracy. This resistance to the data has constituted a significant impediment to understanding the existence, causes, and consequences of both stereotype accuracy and inaccuracy.