[Differential courses of development in children born with hemolytic disease of newborn]

Repeated psychological investigations were performed in a group of 124 children who received exchange transfusions due to morbus haemolyticus neonatorum as newborns. Their psychomotoric development was compared with a control group without exchange transfusions. In the Mhn-children a lower level of cognitive capacity was observed. There was a higher percentage of mental retardation and of handicaps. The distribution between female and male children was nearly equal.