“…The PPCS demonstrated strong psychometric properties in terms of construct, convergent, divergent, and clinical validity and utility (Bőthe et al, 2017;Bőthe, Tóth-Király, et al, 2018Bőthe, Koós, et al, 2019;Bőthe, Lonza, Štulhofer, et al, 2020;Bőthe, Tóth-Király, Bella, et al, 2020;Bőthe, Tóth-Király, Demetrovics, et al, 2020;Bőthe et al, 2021;Tóth-Király et al, 2019). Moreover, gender, sexual orientation, treatment-seeking status, and culture-based measurement invariance have been established for the PPCS in previous studies (Bőthe, Tóth-Király, Demetrovics, et al, 2020;Bőthe, Tóth-Király, et al, 2018;Chen et al, 2021), while no measurement invariance has been tested for the BPS yet, and only some preliminary results are available for the PPUS (Borgogna et al, 2018(Borgogna et al, , 2019. In addition, a large-scale mixed-method study including quantitative analyses, clinical interviews with patients reporting PPU, and therapists' clinical assessments, demonstrated that all PPU symptoms assessed by the PPCS were endorsed by both patients and therapists, and concluded that the PPCS is a more accurate, reliable, and valid measure than other PPU scales (Chen & Jiang, 2020).…”