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Direct linkSemmes, Robert; Davison, Mark L.; Close, Catherine – Applied Psychological Measurement, 2011
If numerical reasoning items are administered under time limits, will two dimensions be required to account for the responses, a numerical ability dimension and a speed dimension? A total of 182 college students answered 74 numerical reasoning items. Every item was taken with and without time limits by half the students. Three psychometric models…
Descriptors: Individual Differences, Logical Thinking, Timed Tests, College Students
Peer reviewedHumphreys, Lloyd G. – Applied Psychological Measurement, 1991
The difference in effect on power of restriction of range between treatments under experimental control and categories formed from examinee (individual differences) variables is discussed. Conditions under which there is loss or increase of power are explained. (SLD)
Descriptors: Control Groups, Correlation, Effect Size, Experimental Groups
Peer reviewedOverall, John E.; Magee, Kevin N. – Applied Psychological Measurement, 1992
The following models which provide an estimate of the reliability of a rating scale are described: (1) disattenuation; (2) common factor; (3) external criterion; (4) treatment effects; and (5) regression. Such models are especially useful in selecting, evaluating, and training participants in clinical research. (SLD)
Descriptors: Correlation, Estimation (Mathematics), Evaluation Methods, Evaluators
Peer reviewedHeinrich, Darlene L. – Applied Psychological Measurement, 1979
The relationship between anxiety and learning was examined within the context of drive theory and trait-state anxiety theory. Results indicated that trait anxiety had a causal influence on state anxiety and on test performance. The possibility of a reciprocal relationship between state anxiety and performance was suggested. (Author/BH)
Descriptors: Academic Achievement, Affective Measures, Anxiety, Cognitive Ability
