Groups psychology's own recognized branches and specialties, from Abnormal Psychology to Traffic Psychology, cross-checked against the American Psychological Association's own division structure. A branch is the classification axis every psychologist, theory, study, school and psychological-phenomenon entity is grouped by through its own SubLabel, so the branch type itself carries no SubLabel and no subcategory tree of its own; subdividing it further would be a redundant meta-level over an axis that is already the finest division the atlas uses. It deliberately excludes psychiatric diagnosis and clinical treatment, which stay Medicine's own subject matter under the atlas's medicine seam.