MA changes in institutionalized Down's syndrome persons: a semi-longitudinal approach.

A semi-longitudinal approach was employed in this partial replication of a larger study of MA changes in institutionalized retarded persons (Fisher & Zeaman, 1970). Curves were fitted to MA data for a Down's syndrome group and a group of retarded subjects matched on the basis of initial Ma and CA. The findings generally replicated those of the earlier study… CONTINUE READING