Creative Arts Therapies, Psychomotor Therapy, and Play Therapy for People with Severe Intellectual Disabilities and Challenging Behaviour: A Scoping Review of Interventions and Outcomes

Individuals with severe intellectual disabilities and challenging behaviour often face limited access to effective therapeutic interventions, as conventional approaches like cognitive behavioural therapy may not be suitable. Creative arts therapies (CATs), psychomotor therapy, and play therapy have emerged as promising non-verbal alternatives, yet their use in this population remains underexplored. This scoping review aimed to map and synthesize the existing evidence on the application and outcomes of these interventions for individuals with severe intellectual disabilities and challenging behaviour. A comprehensive search was conducted across eight databases in May 2023 (with an update of the search in June 2025). Thirteen studies met the inclusion criteria, namely eight quantitative and five qualitative designs. Interventions included music therapy (n = 7), art therapy (n = 4), a combination of both (n = 1), and play therapy (n = 1); no studies on psychomotor therapy were identified. Reported outcomes were grouped into five domains: cognitive, psychological and emotional, social and interactional, communicative, and creative domain. Improvements were observed in areas such as attention, emotional regulation, social responsiveness, and communicative expression, particularly in structured and attuned therapeutic environments. However, most studies had methodological limitations, including small sample sizes and limited standardisation. These findings suggest potential benefits of CATs and play therapy, while highlighting the need for further research into underrepresented modalities and the use of rigorous single-case experimental designs.