Assessment of the Barnum Effect in Computer-Based Test Interpretations

Stephen J. Guastello · Denise D. Guastello · Larry L. Craft

13 citations0/0 files storedThe Journal of Psychology

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Psychological Testing and Assessment Psychometric Methodologies and Testing Personality Traits and Psychology

Abstract

A prototypic experiment for validating computer-based test interpretations (CBTIs) was conducted. Undergraduates (N = 63) completed the Comprehensive Personality Profile Compatibility Questionnaire (CPPCQ; Craft, 1987). One treatment group rated real CBTIs for relative accuracy, and another group rated bogus CBTIs. A significant main effect for differences in ratings indicated that the real CPPCQ profiles were rated as 74.5% accurate whereas the bogus CBTIs were rated as 57.9% accurate. Several covariate effects were tested, but none were significant.

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References

1986Guidelines for computer-based tests and interpretations 1986Computerized clinical psychological test interpretations: Unvalidated plus all mean and no sigma.1985The challenge of competence and creativity in computerized psychological testing.1985Landmarks in computer-assisted psychological assessment.1985Validation of computer-based test interpretations: Problems and prospects.1984Barnum Meets the Computer: A Critical Test 1986Response to Fowler and Butcher on Matarazzo.

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2015Personality testing in personnel selection: Love it? Leave it? Understand it!1998Computer Assisted Psychological Assessment 1994Computer-based test interpretations as expert systems: Validity and viewpoints from artificial intelligence theory 2012Computerized Personality Assessment

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