Cross-cultural psychology

Cross-cultural psychology studies how psychological processes vary across cultural settings and which findings hold across societies.

Cultural comparison: The systematic comparison of practices, beliefs, or outcomes across cultural groups. Comparisons reveal which psychological patterns vary between cultural settings.
Culture: Shared meanings, practices, norms, and institutions transmitted within a social group. Cross-cultural research examines how these shared patterns relate to psychological processes.
Analytic and holistic thinking: Contrasting styles that emphasize objects and rules or relationships and context, respectively. Cross-cultural studies found different patterns of attention and reasoning across societies.
Evolutionary psychology: The study of psychological traits as adaptations shaped by natural selection. It foregrounds evolved commonalities that cultural comparisons test against local variation.
WEIRD problem: The risk that findings from unrepresentative WEIRD samples are mistaken for universal human patterns. Cross-cultural evidence exposed how narrow sampling can distort general psychological theories.
Measurement invariance: The condition that a measurement tool assesses the same construct comparably across groups. Without it, score differences may reflect biased measures rather than psychological differences.
Cultural psychology: An approach that studies how culture and psychological processes mutually constitute one another. It overlaps with cross-cultural psychology but emphasizes culture–mind co-constitution.
The Müller-Lyer illusion: A visual illusion in which equal lines appear unequal because of their arrow-like ends. Variation in susceptibility across populations challenged assumptions of universal visual perception.
Behavioral genetics: The study of how genetic differences contribute to variation in behavior and psychological traits. It offers a distinct source of variation to consider alongside cultural environments.
Cultural competence: The ability to work effectively with people whose cultural backgrounds differ from one's own. Evidence of cultural variation informs more responsive assessment and intervention.

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