Journal
INTERNATIONAL JOURNAL OF FORENSIC MENTAL HEALTH
Volume 21, Issue 1, Pages 37-53Publisher
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/14999013.2021.1906798
Keywords
Malingering; Inventory of Problems; IOP; coaching; French
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This study examined the validity and robustness of the IOP-29 and IOP-M in detecting coached feigning of schizophrenia through a simulation design. Results from a French sample of 115 volunteers supported the effectiveness of both IOP instruments, although the findings may not generalize to females as all participants were male.
Evaluating the credibility of the respondent's cognitive and psychological complaints is a core component of forensic mental health assessment. The Inventory of Problems-29 (IOP-29) and a new IOP-Memory module (IOP-M) are designed specifically for that purpose. Initial research suggests that they might provide practitioners with a quick and thus potentially efficient check of an examinee's presentation credibility, based on the integration of both symptom and performance validity indicators. To contribute to emerging research on this topic, this study used a simulation design to examine the validity of the IOP-29 and IOP-M and their robustness in detecting coached feigning of schizophrenia. It is the first to extend this duo of measures to a French sample. Results from 115 volunteers supported the effectiveness of both IOP instruments. Because all participants were male, however, our findings may not generalize to females.
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