Descriptor
| Age | 1 |
| Cognitive Development | 1 |
| Comparative Analysis | 1 |
| Conservation (Concept) | 1 |
| Elementary School Students | 1 |
| High School Students | 1 |
| Institutionalized Persons | 1 |
| Mental Retardation | 1 |
| Weight | 1 |
Author
| Brekke, Beverly | 1 |
| Williams, John D. | 1 |
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Peer reviewedBrekke, Beverly; Williams, John D. – Journal of Genetic Psychology, 1974
Compared institutionalized and public school retardates to normal elementary and high school students at several mental age levels on three conservation of weight tasks. (Author/SDH)
Descriptors: Age, Cognitive Development, Comparative Analysis, Conservation (Concept)
