Different Types of Conservation and Nonconservation and Their Relation to Age, Sex, IQ, MA, and Vocabulary

Conservation of substance, weight, continuous and discontinuous quantity, number, area, distance, length, 2-dimensional and 3-dimensional space and their relation to age, sex, IQ, MA, and vocabulary were assessed in normal and emotionally disturbed children in first and second grades. Although the emotionally disturbed children were 2 years older, their level of conservation was not higher than that of the normal children. In contrast, normal...