Mark, a trained gourmet chef, has been applying repeatedly for a job in a restaurant that specializes in the cuisine of a different ethnic group. Despite his extensive training and experience in serving this cuisine, the restaurant has not hired him without providing clear reasons for the rejection. Mark, however, felt that the panel members who interviewed had an unsaid but strong feeling that only people belonging to their ethnicity can serve their food and that the ability cannot be learned. This is an example of:.