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| Individual Development | 2 |
| Intelligence | 2 |
| Intelligence Differences | 2 |
| Adults | 1 |
| Age Differences | 1 |
| Age Groups | 1 |
| Biological Influences | 1 |
| Environment | 1 |
| Heredity | 1 |
| Intellectual Development | 1 |
| Intelligence Tests | 1 |
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| Natural History | 1 |
Author
| Gould, Stephen Jay | 1 |
| Horn, John L. | 1 |
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Gould, Stephen Jay – Natural History, 1974
The author argues that no "hard" data exists on genetically based differences in intelligence among human groups. IQ measures the heritability of IQ, and statistical inaccuracies in reported studies are discussed and questioned. The current interest in biological determinism of intelligence is trivial; individuals can not be judged by group means.…
Descriptors: Biological Influences, Environment, Heredity, Individual Development
Download full textHorn, John L. – 1971
The author reviews cross-sectional and longitudinal studies on the status of intelligence in the aging, and finds conflicting conclusions: (1) intelligence does decline as persons grow older; (2) only some aspects decline while others improve; and (3) intelligence does not decline. Certain factors are adduced to suggest that such…
Descriptors: Adults, Age Differences, Age Groups, Individual Development
