Dr. Paul Rozin studies cultural psychology, focusing on the acquisition of likes and dislikes for foods, nature and development of the magical belief in contagion, cultural evolution of disgust, ambivalence to animal foods, lay conception of risk of infection and toxic effects of foods, interaction of moral and health factors in concerns about risks, relation between people's desires to have desires and their actual desires (including the problem of internalization), acquisition of culture, nature of cuisine, cultural evolution. Hi research is carried out in USA, France, Japan and India. He provides commentary in Taboo: Gross Food.