“…Although some previous systematic reviews have focused on psychosocial‐behavioural interventions for people with intellectual disabilities, they were limited to: the effectiveness of a specific intervention approach, i.e. mindfulness‐based (Singh & Hwang, 2020), psychotherapeutic (Oshodi & Turk, 2016) and cognitive behavioural (Derks et al, 2022; Felce et al, 2015); a particular aspect of daily living skills, such as self‐management (Sandjojo et al, 2020), oral hygiene (Waldron et al, 2019), weight management (Akhtar & McGibbon, 2022; Ptomey et al, 2021) and lifestyle change (Willems et al, 2018); a particular age group or severity of intellectual disability (Kok et al, 2016; Oshodi & Turk, 2016; Vereenooghe et al, 2018). To date, no review with a broad focus on psychosocial‐behavioural interventions (i.e., all non‐pharmacological/physiological interventions) involving school‐aged children with intellectual disabilities, across contexts, age groups and intellectual disability severity levels has been published.…”