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Thank you!Schroeder RW, Bieu RK. Exploration of PCL-5 symptom validity indices for detection of exaggerated and feigned PTSD. J Clin Exp Neuropsychol. 2024 Mar;46(2):152-161. doi: 10.1080/13803395.2024.2314728.
And Shura’s 2023 article that initially developed the indices studied are god reads. A CAPS or PSSI5 would be ideal but sometimes the best I get when doing an assessment involving reviewing others work is a single or a few PCL-5s. I’m glad they’re exploring this.
I had been aware of (and recently messaged by another psychologist regarding) the original Shura article on the embedded symptom validity indices in the PCL-5. I developed a brief 'scoring sheet' for it and have used it at work (just casual observations at this point as I work on cases). Would be really cool to have a study where the same treatment seeking veterans were examined in light of their scores on these embedded indices plus MMPI-2-RF plus CAPS, especially if followed by a trial of an EBP protocol (PE/CPT/EMDR) and response.
Which raises the question...since we have so many treatment outcome studies where response to PE/CPT/EMDR protocols include weekly PCL-5 data...where the hell is the analysis of how participants' scores on the embedded validity indices on the PCL-5 impacts treatment response? The obvious hypothesis would be of course that those scoring higher would tend to show little/no improvement. Though I'd suggest at least the possibility of a more complex picture. I have seen cases where people show dramatic response to PTSD treatment in terms of symptom reduction but equally dramatic return of symptoms 2-3 months later (sometimes with scores elevated more than they were pre-treatment) and the re-present for care. So examination of impact on medium to long-term maintenance of gains would be necessary. In any case, a good litmus test of the intellectual honesty of the field will be if they examine the data they already have on the PCL-5 (from these treatment outcome studies) using the new validity indices. I'm not holding my breath.
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