theory saying that we all possess some degree of the 3 main temperamental components that make up the 3 body types on a 7 point scale. They body types are ectomorph, endomorph and mesomorph. Devised by William Sheldon, 1899-1970.
SHELDON’S CONSTITUTIONAL THEORY OF PERSONALITY: “Sheldon’s constitutional theory of personality is dependent on 3 basic body types.”