The very young child with retarded functioning who does not fit clearly into any of the well-defined organic categories, continues to be a kind of terra incognita. Parents become alarmed when they find that their child does not develop as other children do. In their search for help they often receive conflicting opinions or inadequate guidance. The fact is, that except for the known state institutions, there are very few existing resources for this kind of child. There are even fewer resources which attempt to explore intellectual potential before making a final judgment. A start is now being made in accumulating knowledge and techniques of therapy both for children and their parents in this situation.
The authors have previously reported on a three-year program for preschool children with retarded functioning,1-3 some of whom were helped to achieve performance within normal limits. We have now had the chance to study