Descriptor
| Age Differences | 2 |
| Data Analysis | 2 |
| Perceptual Development | 2 |
| Visual Discrimination | 2 |
| Cognitive Ability | 1 |
| Cognitive Processes | 1 |
| Contrast | 1 |
| Disadvantaged Youth | 1 |
| Educational Testing | 1 |
| Eye Hand Coordination | 1 |
| Longitudinal Studies | 1 |
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| Developmental Psychology | 1 |
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Peer reviewedWeintraub, Daniel J.; Cooper, Lynn A. – Developmental Psychology, 1972
Testing Pollack's hypothesis that decreases in effective contour contrast (resulting from a decrease in receptor sensitivity with age or from a change in actual stimulus contrast) lead to decreases in illusion magnitude. Conclusions are questioned by Sjostrom and Pollack (PS 501 740). (Author/MB)
Descriptors: Age Differences, Cognitive Processes, Contrast, Data Analysis
Lindstrom, David R.; Shipman, Virginia C. – 1972
The Seguin Form Board Test is used to assess visual discrimination and matching and eye-hand coordination. Previous analysis has shown the vactor loadings for the same scale to differ among age levels, so the test may be measuring different abilities at different age levels. Test materials consist of ten differently shaped wooden blocks and a…
Descriptors: Age Differences, Cognitive Ability, Data Analysis, Disadvantaged Youth
