Rösler H D, Günther G, Haiduk A, Kleinpeter U
Psychiatr Neurol Med Psychol Beih. 1979;25:18-24.
Our studies show that the special features in the psychic development of encephalopaths showing normal intelligence consist in delayed motor, intellectual and educational progress. While motor retardation is reduced with age, as a result of such factors as rhythmical and psychomotor musico-therapy, individual intelligence test results drop more frequently at school age. The drop is less marked in students attending special classes, although they go back to their original schools after grade 4. The trend toward deterioration in intellectual development is reduced with age, i.e. when educational progress as encouraged by society, slows down. Despite their normal performance with regard to intelligence these students markedly lag behind their healthy contemporaries as far as performance at school is concerned.