Psychic and intellectual development in girls with precocious puberty.

Examinations of psychic and intellectual development were made in 9 girls with idiopathic precocious puberty. The question was, whether precocious somatic maturation corresponds with an accelerated development of intellectual efficiency and psycho-social behaviour. Whereas psychodiagnostic investigations and questionnaires to parents and teachers suggested age-related, normal results, there was found a remarkable tendency to elevated IQ values, averaging 123. Complex influences as increased general vitality, elevated pression towards psycho-social achievement and accelerated maturation of certain brain areas are discussed as conditional factors.