“…Evidence to support irrational beliefs as transdiagnostic factors includes that a) there is a moderate positive association between irrational beliefs and distress (e.g., general distress, anxiety, depression, anger, guilt) according to the results of a meta-analysis ( Vîslă et al, 2016 ), b) irrational beliefs are mechanisms of change in interventions that aim to reduce emotional distress ( Smith, 1983 ; Szentagotai et al, 2008 ), c) irrational beliefs appear across multiple mental health problems, such as: anxiety disorders, depressive disorders, post-traumatic stress disorder, psychosis, addictions ( David et al, 2018 ; Rezaeisharif et al, 2021 ; Vîslă et al, 2016 ) d) are investigated as predictors or maintenance factors of psychological distress, namely for PTSD ( Hyland et al, 2015 ), depression and anxiety in patients with diabetes ( Vassou et al, 2021 ), paranoia ( Soflau and David, 2019 ). Moreover, there is extensive evidence that catastrophic thinking is a transdiagnostic process across mental disorders, such as anxiety disorders (panic, phobia), obsessive-compulsive disorder, posttraumatic stress disorder, health anxiety, pain, psychosis, irritable bowel syndrome, and traumatic brain injury ( Gellatly and Beck, 2016 ).…”