The final stage of life,according to Cattell,is a time of health,vigor,and physical attractiveness and is closely in line with Freud's last stage of development.

Cattell

Refers to Raymond Cattell, a psychologist known for his work in personality, factor analysis, and the development of several personality assessments.

Freud

Sigmund Freud, an Austrian neurologist and the founder of psychoanalysis, a method for treating psychopathology through dialogue.