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Ruscio, John; Walters, Glenn D.; Marcus, David K.; Kaczetow, Walter – Psychological Assessment, 2010
A number of recent studies have used Meehl's (1995) taxometric method to determine empirically whether one should model assessment-related constructs as categories or dimensions. The taxometric method includes multiple data-analytic procedures designed to check the consistency of results. The goal is to differentiate between strong evidence of…
Descriptors: Methods, Comparative Analysis, Data Analysis, Reliability
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Ruscio, John; Marcus, David K. – Psychological Assessment, 2007
On the basis of taxometric analyses of data sets that they created to pose interpretive challenges, S. R. H. Beach, N. Amir, and J. J. Bau (2005) cautioned that using comparison data simulated by J. Ruscio's programs can lead to inaccurate conclusions. Careful examination of S. R. H. Beach et al.'s methods and results plus reanalysis of their data…
Descriptors: Classification, Comparative Analysis, Statistical Analysis, Simulation
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Hawes, Samuel W.; Boccaccini, Marcus T. – Psychological Assessment, 2009
The Personality Assessment Inventory (L. C. Morey, 1991) includes 3 measures for identifying overreporting of psychopathology: the Negative Impression scale (NIM), Malingering Index (MAL), and Rogers Discriminant Function (RDF). Meta-analysis revealed that each measure was a strong predictor of uncoached (NIM, d = 1.48, k = 23; MAL, d = 1.15, k =…
Descriptors: Personality Assessment, Mental Disorders, Identification, Psychopathology
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Beach, Steven R. H.; Amir, Nader; Bau, Jinn Jonp – Psychological Assessment, 2005
The authors examined the role of the sample-specific simulations (SSS; A. M. Ruscio & J. Ruscio, 2002; J. Ruscio & A. M. Ruscio, 2004) procedure in detecting low base-rate taxa that might otherwise prove elusive. The procedure preserved key distributional characteristics for moderate to high base-rate taxa, but it performed inadequately for low…
Descriptors: Simulation, Measurement Techniques, Statistical Analysis, Validity