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Thomas, Michael L.; Lanyon, Richard I.; Millsap, Roger E. – Psychological Assessment, 2009
The use of criterion group validation is hindered by the difficulty of classifying individuals on latent constructs. Latent class analysis (LCA) is a method that can be used for determining the validity of scales meant to assess latent constructs without such a priori classifications. The authors used this method to examine the ability of the L…
Descriptors: Validity, Measures (Individuals), Statistical Analysis, Classification
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Walters, Glenn D.; Berry, David T. R.; Lanyon, Richard I.; Murphy, Michael P. – Psychological Assessment, 2009
A taxometric analysis of 3 factor scales extracted from the Health Problem Overstatement (HPO) scale of the Psychological Screening Inventory (PSI; R. I. Lanyon, 1970, 1978) was performed on the data from 1,240 forensic and psychiatric patients. Mean above minus below a cut, maximum covariance, and latent-mode factor analyses produced results…
Descriptors: Measures (Individuals), Screening Tests, Patients, Deception