Is speech and language therapy effective at improving the communication of adults with intellectual disabilities?: A systematic review

A systematic review of research on staff training as an intervention to develop communication in children and adults with profound intellectual and multiple disabilities

INTRODUCTION

This paper aims to identify to what extent staff training interventions are successful in enhancing the development of communication skills in people with profound intellectual and multiple disabilities.

METHODS

A systematic review was undertaken, conforming to PRISMA guidelines. English language, peer reviewed, empirical studies of staff training interventions to enhance the communication of people with profound intellectual and multiple disabilities were included. Databases Scopus, Web of Science, Proquest, Linguistics and Language Behaviour Abstracts (LLBA) and Medline were searched in July 2015 and updated in December 2022. Quality appraisal was conducted on 13 studies using Crowe's Critical Appraisal Tool (CCAT).

RESULTS

Few good quality evaluations of interventions were found. Challenges to research rigour included the diversity of people with profound intellectual and multiple disabilities, small sample sizes, intervention intensity and the management of fidelity.

CONCLUSIONS

Manualised and bespoke interventions showed promise in improving staff communication and responsiveness.

Scoping review on communication systems used by adults with severe/profound intellectual disability for functional communication

BACKGROUND

Adults with severe/profound intellectual disability typically face poor communication outcomes as they are often nonverbal and need their supporters to provide for their communication needs. This review aimed to identify studies focused on the communication resources people with severe/profound intellectual disability use for functional communication, and the enablers and barriers to functional communication.

METHODS

Nine databases were systematically reviewed with keywords pertaining to the functional communication of adults with severe/profound intellectual disability. Out of 3427 identified articles, 12 met the inclusion criteria. Hand searches and ancestral searches identified another 4 articles. Out of the 16 articles, two did not meet the quality assessment criteria and were excluded. Thus, 14 articles were included in this review.

RESULTS

The findings revealed that picture exchange communication systems is the most common communication system used to support the development of functional communication. The most common functions enabled by the communication systems were choice-making and making requests. Several barriers (e.g., individual factors related to adults with severe/profound intellectual disability, others' attitudes, behaviour and knowledge) to and enablers (e.g., accessibility and availability of the communication system, training for those supporting adults with severe/profound intellectual disability) of functional communication were identified.

CONCLUSIONS

Removing the barriers and enabling functional communication is essential to developing the functional communication of adults with severe/profound intellectual disability.