
Contents
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Introduction Introduction
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History of IQ Test Interpretations History of IQ Test Interpretations
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Psychometric Interpretation Methods Psychometric Interpretation Methods
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Global IQ Score Interpretation/Stratum III Global IQ Score Interpretation/Stratum III
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Global Score Psychometric Support Global Score Psychometric Support
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Broad Factor/Verbal-Nonverbal Score Interpretation/Stratum II Broad Factor/Verbal-Nonverbal Score Interpretation/Stratum II
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Verbal vs. Nonverbal Assessment Verbal vs. Nonverbal Assessment
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Verbal−Nonverbal (VIQ-PIQ/VCI-PRI) Comparisons Verbal−Nonverbal (VIQ-PIQ/VCI-PRI) Comparisons
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Factor/Broad-ability Score Comparisons Factor/Broad-ability Score Comparisons
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Factor/Broad-Ability Psychometric Support Factor/Broad-Ability Psychometric Support
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Factorial/Structural Validity Factorial/Structural Validity
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Factor/Broad-Ability Incremental Validity Factor/Broad-Ability Incremental Validity
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Subtest-Based Score Interpretation/Stratum I Subtest-Based Score Interpretation/Stratum I
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Subtest Psychometric Support Subtest Psychometric Support
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Ipsative Subtest Comparisons Ipsative Subtest Comparisons
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Ipsative Subtest Comparison Psychometric Support Ipsative Subtest Comparison Psychometric Support
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Psychometric Interpretation Conclusion Psychometric Interpretation Conclusion
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Actuarial Interpretation Methods Actuarial Interpretation Methods
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Statistical/Actuarial Approaches: Classification of Intelligence Test Profiles Statistical/Actuarial Approaches: Classification of Intelligence Test Profiles
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Cluster Comparison Psychometric Support Cluster Comparison Psychometric Support
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Statistical/Actuarial Approaches to Classification and Diagnosis Statistical/Actuarial Approaches to Classification and Diagnosis
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Systems Actuarial Classification Systems Actuarial Classification
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Actuarial Interpretation Conclusion Actuarial Interpretation Conclusion
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General Conclusion General Conclusion
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Author Note Author Note
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References References
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chapter 4 Psychometric Versus Actuarial Interpretation of Intelligence and Related Aptitude Batteries
Get accessGary L. Canivez, Department of Psychology, Eastern Illinois University
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Published:01 May 2013
Cite
Abstract
Interpretation of intelligence tests involves making various inferences about the individual based on their performance. Because there are many different scores within intelligence tests reflecting different levels (Full Scale, factors, subtests) and there are many different comparisons provided in test manuals and the extant literature, there is a multitude of possible inferences. This chapter is concerned with reviewing the various available scores and comparisons with suggested interpretations and a review of the empirical investigations of their psychometric fitness (reliability, validity, utility). Differentiation of psychometric interpretation versus actuarial interpretation methods is presented, as well as a review of research related to each. Most intelligence test interpretation methods are considered psychometric in nature, and most lack sufficient reliability, validity, or utility for individual clinical use; improvements in the clinical assessment of intelligence may result from greater development and use of actuarial approaches.
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