Sex Differences in Primary Mental Abilities

Some knowledge about and common acceptance of variance in voca tional and artistic talents among men antedated by considerable period of time the formulation of the present generally accepted theories of individual differences in most human traits. The observation of a square peg in round hole is older than any psychological laboratory. The phrenologist and the character analyst reached their zenith before the development of aptitude testing and the vocational guidance movement. Introspective man has always had great curiosity as to what he is good for.