It was concluded that age and IQ have strong influences on acquisition-retrieval, but that forgetting rate is independent of these variables. (Author)

Compared were performances of 39 educable mentally retarded (EMR) Ss, mean chronological age (CA) 11 1/2 years, mean mental age (MA) 7 3/4 years; 25 fifth graders matched on CA; and 27 second graders matched on MA to determine whether children of different ages and IQ spontaneously demonstrate learning strategies after repeated practice with…

The relation of CA, MA, and IQ to conservation was examined by comparing the performance of bright, normal, and retarded children matched on the critical MA of six years. (Author)

Two studies were designed to examine the relationship between moral judgment and role-taking in young children. In Study I, 30 lower class and 30 middle class five-year-olds were presented with affective, cognitive and perceptual role-taking tasks. Task performances were then examined in relation to four dimensions of moral…

This paper discusses research exploring the performance factors involved in studies which test for formal operations. It is suggested that several previous studies dealing with formal operations confound performance and competence in determining the extent of subjects' formal operations schemata. Factors which might account for performance…

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…