All of the children were presented conservation of liquid and weight problems and 12 metaphor items. The results suggest that hearing loss did not affect the solution of either conservation or metaphor. (Author)

Administered the Raven Progressive Matrices (RPM) to (N=408) individuals in 100 family groups. Scores on all five subtests were highest in the 18-26 age group, decreasing with age. Males scored higher on each subtest in each age group. Performance on the RPM increased with additional years of education. (Author)

Construct organization was inferred from subjects' responses to a specially modified implication grid. Both developmental predictions and the validity of grid measures received excellent support from the analysis of children's theories of their peers as a function of their own age, sex and verbal intelligence. (Author)

Twenty high mental age (MA) subjects and 33 low MA subjects who had been in a free word association test 30 months previously were retested with the Moran 80-Word List. At the time of the previous testing, subjects in the high group had a mean chronological age (CA) of 17.1 and mean MA of 11.5; subjects in the low group had a mean CA of 15.3 and…

The effects of age and intelligence levels upon word associations were studied in 96 intellectually retarded, normal, and superior children with IQ's of 65 to 80, 91 to 110, and 117 to 158 respectively. A word association and a word usage task (reliability coefficients of .91 and .98) called for homogeneous responses to six form classes--count…