STERN, William

(1871-1938) - German psychologist. According to S., a person under a swarm, he understood not only the human person, but any coherent object is an indivisible mental and physical unity, integrity-swarm due to its individual expression and function. SH. called this concept 'personalistic psychology' ( 'person and the thing', 1906). He spent a large series of experimental studies to the development of perception, . speech, . mental processes in children, has developed methods of testing ability, . put forward the concept of 'IQ', . obtained by dividing the 'mental age' on the physical,
. Laid the foundations of differential psychology, based on the principle of convergence of hereditary factors and conditions of social and cultural environment.