[Results of long-term longitudinal studies of lateralization of motor and sensory functions]

Results of a follow-up study of the lateralisation of motory and sensory functions are presented. The development of handedness, the preference of one leg, one eye and one ear was determined for about 200 probands at the age of 3/4 to 17 years. Three types of lateralisation were found: (i) the "non-right" motory and sensory functions type (ambivalence); (ii) the "right" motory functions/"non-right" sensory functions type; (iii) the "right" motory and sensory functions type (univalence).