Psychological processes influence culture. Culture influences psychological processes. Individual thoughts and actions influence cultural norms and practices as they evolve over time, and these cultural norms and practices influence the thoughts and actions of individuals. Large bodies of literature support these conclusions within the context of research on evolutionary processes, epistemic needs, interpersonal communication, attention, perception, attributional thinking, self-regulation, human agency, self-worth, and contextual activation of cultural paradigms. Cross-cultural research has greatly enriched psychology, and key issues for continued growth and maturation of the field of cultural psychology are articulated.