Relationships with other branches of psychology
Cultural psychology is often confused with cross-cultural psychology. However, cultural psychology is distinct from cross-cultural psychology in that the cross-cultural psychologists generally use culture as a means of testing the universality of psychological processes rather than determining how local cultural practices shape psychological processes. So whereas a cross-cultural psychologist might ask whether Jean Piaget's stages of development are universal across a variety of cultures, a cultural psychologist would be interested in how the social practices of a particular set of cultures shape the development of cognitive processes in different ways.
Cultural psychology research informs several fields within psychology, including social psychology, cultural-historical psychology, developmental psychology, and cognitive psychology. However, the relativist perspective of cultural psychology, through which cultural psychologists compare thought patterns and behaviors within and across cultures, tends to clash with the universal perspectives common in most fields in psychology, which seek to qualify fundamental psychological truths that are consistent across all of humanity.