Psychological examinations were made in 56 children from quintuplet, quadruplet, and triplet pregnancies. The psychomotor development of these children from multiple pregnancies did not, as a rule, differ much from the one of singletons, although the multiple pregnancy was more inclined to cause lesions of the central nervous system. Out of the 56 children examined, 25 were found to develop properly.

It is necessary to examine the development of each child separately, taking into consideration its health condition in the neonatal period and its specific environment which effect the individual development and may be the cause of disturbances, as well as of mental differences not only in children from the same pregnancy but even in MZ twins.