Patterns of Discrimination Leraning Set in Preschool Children, Fifth-Graders,College Freshmen, and the Aged Nr.115 1967
Class and Ethnic Differeces in the Responsiveness of Presschool Children to Cognitive Demands Nr.117 1968
A method for Assessing Personality Development for Follow-up Evulations of the Preschool Child Nr.119
Personality Structure in Middle Childhood and the Prediction of school Achievement and Adjustment Nr.121 1968