Reliability and Learning Factors Associated with Cognitive Tests

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Abstract
Reliability, practice effects, and factor loadings were investigated for 21 paper-and-pencil tests selected from the French, et al. Kit of Reference Tests for Cognitive Factors. Criteria of brevity and ease of administration were employed for selecting tests to be studied. The results are helpful in selecting those tests of cognitive abilities which may be most useful in studies of the effects of climatic and environmental variables on behavior. Such studies frequently require repeated measurements on a small group of Ss over several days, thus making it extremely important that practice and environmental effects not be confounded. Test-retest reliabilities of the tests were generally quite good; 16 of the tests had a Pearson r of .8 or greater. Eight of the tests showed enough stability in mean performances over six trials to suggest that they may be used repetitively under environmental extremes without serious confounding by practice. The authors caution that factor definitions may not be the same under extreme conditions and under normal environmental conditions.

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