Malingering Probability Scale

The Malingering Probability Scale (MPS) was developed in the mid-1990s as a self-report instrument to estimate the probability of malingering, taking account of base rates in underlying populations. The instrument was based on three premises: (1) that psychopathology expresses itself in clearly defined syndromes for which certain symptoms, though perhaps plausibly related, have very low likelihoods of occurrence; (2) that patients will vary in the type of symptoms they feign depending on the context; and (3) that the identification of probabilities of any given individual of malingering should be adjusted according to the base rate of malingering in the population from which he or she was drawn. The MPS was developed by Leigh Silverton, who also designed and conducted many studies; analyzed much of the ...

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