Exploratory behaviors of Down Syndrome and nondelayed young children between the mental ages of 16 and 32 months were examined in four situations in which they tried to find things which they saw reflected in a mirror. Down Syndrome and nondelayed children differed in number, type, and frequency of exploratory behaviors. (PCB)

Examines differences in habituation in a visual attention task as a function of chronological age, mental age, and handicapping condition. Subjects were 102 children who ranged in age from 3 to 36 months and who were classified as Down Syndrome, cerebral palsied, developmentally delayed, or multiply handicapped. (Author/RH)