Malingering della depressione:uno studio di simulazione che testa le versioni portoghesi di IOP-29 e IOP-M, somministrate online e di persona.

Depression is a widespread phenomenon, with its prevalence being around 7%, according to the DSM-5 (APA,2013). Depression carries with it not only a diminished quality of life, but also many costs, like the ones linked to treatments, absence from work and/or compensation (Monaro et al., 2018). Besides, Mittenberg et al. (2002) suggested that depression might be malingered in 16.08% of the cases. Given that the estimated costs for malingering in the United States in 2012 were around $20 billions (Chafetz and Underhill, 2013), the possibility of malingered depression should not be neglected in any forensic evaluations. Different kinds of tests have been implemented to identify noncredible responding, and in this study the focus is on the Inventory of Problems-29 (IOP-29; Viglione et al., 2017) and the Inventory of Problems-Memory (IOP-M; Giromini et al., 2020), two recently developed tests that have already demonstrated good validity and classification accuracy (Giromini et al., 2019b; Gegner et al., 2021). Results of two simulation/analogue studies indicated that, when compared to TOMM (Tombaugh, 1996) and FIT/FITr (Rey, 1964; Boone et al., 2002), two of the most used tests for the detection of malingering, validity and classification accuracy seems to be in favor of IOP-29 and IOP-M. Moreover, the in-person and online administration formats of the IOP-29 and IOP-M held equivalent results.