 Because discussion of kinds of persons with dispositions to think and behave quickly gives rise to other questions about freedom of the will and social regulation, debates over constructionism about kinds are central to social and political debates regarding human categorization, including debates over sex and gender, race, emotions, hetero- and homo-sexuality, mental illness, and disability. Since the constructionist strategy explains a trait by appeal to highly contingent factors (including culture), partisans of these debates often come inquire whether a trait or cluster of traits is culturally specific, or can be found across cultures.