This is our top-level category - looked at another way, it is our root category! Every other category should be a subcategory of some at least one category and may easily be appropriate in two or three.

Wikipedia categories may be a useful guide, but only psychology appropriate categories should be copied over with any page that is copied. See project:Copying from Wikipedia.

Every article should be in at least one category for ease of finding by people who know the subject of interest but not the page name.

Foundations

Philosophy and psychology

Psychometric assessment

Statistics and mathematics

Human experimental psychology

Comparative psychology

Biological psychology

Developmental psychology

Applied psychology

Clinical psychology

Professional items

Educational psychology

Industrial & organisational psychology

Other specialist fields of psychology

Transpersonal psychology

World psychology

Social psychology

Psychology of personality