A Foster-Grandparent Program group received part-time mothering'' by elderly institutional aids for a period of up to more than 4 years. A control group resided in a similar institution which did not provide supplementary foster grandparent'' care. There was a significant difference in IQ in favor of the FGP children. (Author)

The present study explores the specific environmental influences in the intellectual development of 24 adoptive infants living in middle class families. (Author)