A clinical comparison simulation study using the Inventory of Problems-29 (IOP-29) with the Center for Epidemiologic Studies Depression Scale (CES-D) in Lithuania. Issue 2 (4th March 2022)

• Record Type: Journal Article
• Authors: Ilgunaite, Guste; Giromini, Luciano; Bosi, Jessica; Viglione, Donald J.; Zennaro, Alessandro
• Is Part Of: Applied neuropsychology. Volume 29:Issue 2(2022)
• Page Start: 155
• Page End: 162
• Publication Date: 2022-03-04
• Subjects: Depression -- Lithuania -- malingering feigning -- IOP-29; Neuropsychology -- Periodicals; Cognition disorders -- Periodicals; Brain -- Diseases -- Diagnosis -- Periodicals; Brain -- Imaging -- Periodicals; Brain -- Diseases -- Treatment -- Periodicals; Diagnostic Imaging -- Periodicals; Neuropsychological Tests -- Periodicals; Adult; 616.8
• DOI: 10.1080/23279095.2020.1725518
• Languages: English
• ISSNs: 2327-9095

Abstract

Abstract: This article contributes to the growing research on the validity of the recently developed, Inventory of Problems – 29 (IOP-29) in the discrimination of feigned from bona fide mental or cognitive disorders. Specifically, we first developed a Lithuanian version of the IOP-29 and tested its validity on a sample of 50 depressed patients and 50 healthy volunteers instructed to feign depression. Next, we reviewed all previously published IOP-29 studies reporting on depression-related presentations ( k = 5), and compared our results against previously reported findings. Statistical analyses showed that the Lithuanian IOP-29 discriminated almost perfectly between genuine and experimentally feigned major depression, with Area Under the Curve (AUC) = .98 ( SE = .01) and Cohen's d = 3.31. When compared to previously published IOP-29 literature on this same topic, these findings may be characterized as similar or perhaps slightly more encouraging. Indeed, across all international, empirical studies considered in this article, Cohen's d ranged from 1.80 to 4.30, and AUC ranged from .89 to .99. Taken together, these findings contribute to supporting the strong validity and cross-cultural applicability of the IOP-29. They also provide additional support for its use in forensic evaluations.