Performance curve classification of invalid responding on the Validity Indicator Profile.
The purpose of this article is to provide evidence for the validity of performance curve classification on the nonverbal subtest of the Validity Indicator Profile (VIP-NV). A four-fold classification scheme of performance on cognitive testing is proposed. This scheme combines effort and motivation to generate four response classifications: compliant, careless, irrelevant, and malingering. Data are presented across six studies from cognitive and personality testing for 737 male pretrial criminal defendants. Additionally, computer-generated VIP-NV performances were subjected to four levels of randomization to investigate VIP-NV carelessness indicators. The findings support the validity of the four-fold classification scheme and support the classification of response on the basis of motivation and effort.
Department of Psychology, U.S. Medical Center for Federal Prisoners, Springfield, MO, USA. rfrederi@ipa.net
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Frederick
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Crosby
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Wynkoop