The present study has several objectives, the most important of which is to adapt the IOP-29 to the Turkish language and validate it cross-culturally in a Turkish community sample from Turkey. In addition, we want to test the sensitivity of the Turkish IOP-29 to different dimensions of feigned presentations: depression, PTSD, and schizophrenia. Finally, we want to assess the utility of the Random Responding Scale (RRS; Giromini, Viglione, et al., 2020b) in distinguishing response style: feigning from random responding. Specifically, the RRS was developed as an index independent of the FDS to detect careless, uncooperative, and/or inattentive responding and to distinguish these response patterns on the IOP-29 from negative response bias (i.e., FDS of IOP-29; Giromini, Viglione, et al., 2020a, 2020b; Winters et al., 2020). Indeed, the literature has shown that content-unrelated distortions (CUD; Nichols et al., 1989), such as random responding, can result in scores indicating overreporting and confound the classification accuracy of SVTs (see Burchett et al., 2016; Merckelbach et al., 2019). Therefore, consistent with the recommendations of Giromini and Viglione (2022), we also want to assess the effectiveness of RRS in a different cultural context using a non-English IOP-29. We hypothesize that there will be no significant difference in the FDS scores of participants in the feigning conditions, and that the FDS scores of honest responders will be significantly lower than those of participants in the feigning conditions. In addition, we speculate that the FDS scores of the random responder condition will be approximately midway between those of the honest responders and the feigning conditions, but more lenient toward those of the feigning conditions, as found in previous studies (Giromini et al., 2020; Winters et al., 2020).