The School-Age Siblings of Mongol Children

¹ Research Psychiatrist, Department of Psychiatry, Park and Warneford Hospitals, Oxford.

A comparison has been made between siblings of mongol children and control children from the same school class on the basis of behavioural rating scales completed by parents and teachers.

Significantly more index children were rated as deviant than were control children. This difference could be accounted for by the increase in antisocial disorder in girls in the siblings of mongol children. Amongst the siblings of mongols, the children most at risk were those whose mother was over 40 at the birth of her mongol baby, those from large families, and those for social classes IV and V. The results are discussed.