[Hermann Emminghaus--100 years of the psychopathology of childhood and adolescence].

The centenary of Hermann Emminghaus's monograph "Die psychischen Störungen des Kindesalters" ("The Psychic Disorders of Childhood") gives occasion to appreciate the life and work of the founder of modern children and youth psychiatry. Children and youth psychiatry, in the G.D.R., operates on the principle of sub-specialization out of its parent subjects. In this, Hermann Emminghaus's basic views, as expressed in his monograph of 1887, are confirmed.