Psychologist entities are the individual researchers, clinicians and theorists this atlas documents, from the field's founding figures through contemporary researchers, each carrying a SubLabel matching one of the atlas's represented branches so a reader can browse the field by who worked in it. This band is the atlas's biographical spine for psychology: a psychologist's page links out to the theories they authored, the studies they conducted and the schools of thought they belonged to or founded, so browsing by person is browsing the field by its practitioners rather than by its ideas. Several thousand notable psychologists across every branch and era are the real scale this band works toward, not a curated handful of famous names.