“…The PAC (Helverschou et al, 2008, 2009) is a caregiver‐completed mental disorder screening checklist developed for autistic individuals with intellectual disabilities. Psychometric properties of the PAC have been found to be acceptable to good (Helverschou et al, 2008, 2009; Helverschou, Ludvigsen, et al, 2021). It has been found to distinguish reliably between mental health symptoms and the core characteristics of ASD (Helverschou et al, 2008), to distinguish autistic adults with intellectual disabilities and co‐occurring mental disorder from those without mental disorder (Bakken et al, 2010; Helverschou et al, 2009; Helverschou, Ludvigsen, et al, 2021), and to a certain extent to distinguish between individuals with different mental disorders (Dalhaug et al, 2022; Helverschou et al, 2009; Helverschou, Ludvigsen, et al, 2021).…”