Moral judgment in retarded and nonretarded school age children.

The moral judgment of 135 normal, educable retarded, and trainable retarded boys and girls (ages 6-10, 11-13, and 14-16) was individually assessed to determine the significance of chronological age and IQ on moral development. The results indicated significant differences in mean normal judgment between the groups and each age level. The findings were interpreted as substantiating Piaget's stage theory of moral development and suggesting that within the retarded population, level of intellectual ability is also significantly related to moral judgment.