Scoping review: Interventions that promote functional performance for adolescents and adults with Intellectual and...

Individuals with Intellectual and Developmental Disabilities (IDD) experience broad impairments that affect their functional performance and consequently result in the need for supervision and assistance on a daily basis. The literature contains effectiveness studies of functional interventions provided to adolescents and adults with IDD. However, existing differences in participant characteristics, study design, and type of functional intervention limit the ability to derive clinical evidence-based decisions. This scoping review sought to explore the breadth and depth of evidence related to interventions designed to promote everyday performance of adolescents and adults with IDD.

We conducted an electronic and hand search that yielded 1568 papers, after an extensive selection process reduced to a sample of 24 studies.

A three-step extraction process of the 24 studies revealed 16 studies used functional training and technology-based approaches to teach individuals with IDD functional skills. Seven studies used functional training without a technology component, and two studies used functional training while comparing technology-based to non-technology based approaches. Overall, it appeared that functional training with the use of technology, especially Video Modelling (VM) and Prompting, were the most frequently and effectively used interventions to promote everyday performance. Gaps in research include limited studies on middle and older aged adults with moderate to severe IDD, minimal use of self-chosen goals or activities and use of technology as a continuous support.

Our findings show a lack of studies for individuals age 30 and above with severe IDD. Additionally, this scoping review highlight that everyday functional performance of adolescents and adults with IDD can be enhanced with the usage of technology based functional interventions utilising VM and prompting methods.