Cross-Cultural Psychology

Cross-cultural psychology is the systematic empirical study of how psychological processes — cognition, emotion, perception, memory, motivation, and social behavior — vary across cultural groups, and which aspects of psychology are universal across human cultures. Where cognitive anthropology approaches cultural variation through fieldwork and interpretive methods, cross-cultural psychology uses experimental and survey methods to generate comparable data across cultures.

The field's central finding challenges a hidden assumption of mainstream psychology: most foundational psychological research has been conducted on WEIRD (Western, Educated, Industrialized, Rich, Democratic) populations, and these populations are among the least representative of human psychological variation globally. Meta-analyses comparing WEIRD samples to non-WEIRD populations have found significant differences in visual perception (the Müller-Lyer illusion is substantially weaker in non-WEIRD populations), social conformity, moral reasoning, and even basic categorization strategies.

The distinction between emic (culturally specific) and etic (cross-culturally comparable) psychological concepts is the field's methodological core. Some psychological phenomena appear genuinely etic — basic emotional expressions, theory of mind, object permanence. Others prove to be profoundly emic: the experience of self, the structure of social networks, the felt character of moral obligation. Cultural relativism makes a stronger claim than the data support; psychology's universalism makes a weaker claim than the data support. The productive position is empirical: determine case by case which phenomena are etic, which emic, and which are etic in structure but emic in content. See also: Cognitive Anthropology, Cultural relativism, WEIRD Psychology, Moral Psychology.