In this paper we develop a general model to explain the hostility toward, and ignorance of, human evolutionary theory (ET) in the social sciences. We first provide relevant theoretical background explaining the basics of ET. We then briefly describe the history of, and reasons for, social science attacks against ET. After providing this background, we turn to our study of social science textbooks, describe the logic of our model, and specify four explicit predictions derived from it. Finally, we present the results of our study and discuss the significance of our findings.