As a background to the present research, preliminary discussion is focused on Piaget's formulation of moral development in the child and recent investigations based on that formulation. The objective of this research was to assess the interrelationships between level of moral judgment maturity and several other sectors of development. A moral judgment situation (appearing in the appendix) was presented to 60 children, ages 5 through 8, while measurements of cognitive ability, personality, socialization, and creativity were obtained. Results support the contentions of Piaget and Kohlberg that there are definitely both social and cognitive aspects of major importance in the development of moral judgment and reasoning. Data indicate that the stage of development tapped in this research was the transition phase between constraint and autonomy--that phase during which rules and commands are being internalized and generalized. Kohlberg's comment that cognitive maturity is necessary but not sufficient for moral judgment maturity, as well as his and Piaget's ideas concerning the relatively increasing importance of socialization for the later stages of development, appear to be borne out. (JLB)