If people favor their ingroup, are especially concerned with their own group, and attribute different essences to different groups, it follows that their essence must be superior to the essence of other groups. Intelligence, language, and certain emotions are all considered to be distinctive elements of human nature or essence. The role of inteligence and language in discrimination, prejudice, and racism has already been largely investigated, and this article focuses on attributed emotions. Specifically, we investigate the idea that secondary emotions are typically human characteristics, and as such, they should be especially associated with and attributed to the ingroup. Seondary emotions may even be denied to outgroups. These differential associations and attributions of specifically human emotions to ingroups versus outgroups should affect intergroup relations. Results from several initial experiments are summarized that support our reasoning. This emotional approach to prejudice and racism is contrasted with more classic, cognitive perspectives.

Four experiments confirmed the hypothesis that people discriminate the out-group on the basis of the expression of uniquely human emotions. In Study 1, using a lost e-mail paradigm, the expression of a uniquely human emotion resulted in "nicer" replies when the sender was an in-group compared with an out-group member. The same pattern of results was obtained in Studies 2 and 3 using a conformity paradigm. In addition, perceived similarity was measured and proposed as a potential underlying mechanism (Study 3). Finally, using an approach-avoidance procedure, Study 4 showed that people not only deprive the out-group of positive consequences as in the former studies but that people also act against the out-group. The role of infrahumanization underlying prejudice and discrimination is discussed.