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The Paradoxical Attenuation Effect in Tests Based on Classical Test Theory: Mathematical Background and Practical Implications for the Measurement of High Abilities
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Ziegler, Albert; Ziegler, Albert – High Ability Studies, 2009
The aim of this paper is to demonstrate the dramatic consequences the application of cut-off points can have in the practice of identifying gifted individuals. The paradoxical attenuation effect describes the frequent situation in which measurements of the gifts and talents individuals possess are lower than their true values. However, in…
Descriptors: Gifted, Academic Achievement, Test Theory, Measurement
Graduate Student WAIS-III Scoring Accuracy Is a Function of Full Scale IQ and Complexity of Examiner Tasks
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Hopwood, Christopher J.; Richard, David C. S. – Assessment, 2005
Research on the Wechsler Adult Intelligence Scale-Revised and Wechsler Adult Intelligence Scale-Third Edition (WAIS-III) suggests that practicing clinical psychologists and graduate students make item-level scoring errors that affect IQ, index, and subtest scores. Studies have been limited in that Full-Scale IQ (FSIQ) and examiner administration,…
Descriptors: Scoring, Psychologists, Intelligence Quotient, Graduate Students