“…The presence of compulsions, which are stereotyped behaviors conducted following rigid rules and performed to decrease or avoid unpleasant consequences (Chamberlain et al, 2009 ), is the core feature observed in obsessive-compulsive disorder (OCD), which affects between 1.1 and 1.8% of the population internationally (American Psychiatric Association, 2013 ). Nowadays, compulsivity could be considered a transdiagnostic trait, which may be a problem for traditional diagnostic systems, prevention, and treatment (Den Ouden et al, 2020 ). In this sense, as a result of neuroscience insights (for a review, see Fineberg et al, 2018 ), the diagnostic classification systems DSM-5 (American Psychiatric Association, 2013 ) and ICD-11 (World Health Organization, 2018 ) have removed OCD from the anxiety disorder grouping, and it now stands at the head of a new family of obsessive-compulsive spectrum disorders (otherwise known as obsessive-compulsive and related disorders, OCRDs), including body dysmorphia, hoarding, hair-pulling, skin picking and olfactory reference disorders, and hypochondriasis, all sharing compulsive behavior as a cardinal characteristic (Fineberg et al, 2020 ).…”