In this study of perspective taking and moral judgment 20 children (10 boys and 10 girls) at each age level between 4 and 10 years were given Feffer's Social Role-Taking Task, a spatial perspective-taking task and Damon's Test of Positive Justice. Investigated were: (1) the specific developmental sequences for role taking, spatial perspective-taking ability, and moral development; (2) the interrelationships among these three abilities at each of the ages; and (3) the impact of perspective (the child's point of view vs. someone else's) on the level of moral reasoning. Results indicate that each ability increased with age, although significant increases occurred only between certain successive ages. Similarly, a correlational analysis of the interrelationships among the abilities indicates that they are significantly positively related only at certain ages. There was evidence that perspective can have a significant impact on moral reasoning at certain ages. These results lend support to the contention that perspective taking mediates moral judgment, and strongly suggest that the nature of the relationship varies with age and seems most pronounced from ages 5 to 7. (Author/SB)