A case study template to support experimental design in Augmentative and Alternative Communication and Assistive Technology

Abstract

Purpose: The field of Augmentative and Alternative Communication/Assistive Technology (AAC/AT) has an extensive literature of non-experimental case descriptions. This limits the generalisation of findings. The current study aimed to develop a template to contribute to single case experimental design specifically for the field of enquiry. Method: A qualitative case study methodology was adopted to construct and evaluate the content and structure of the case study template. Participants represented relevant stakeholder groups. Data were collected through template evaluations and focus groups. Data were analysed using Framework Analysis. Results: Across stakeholder groups, results produced a consensus on AAC/AT terminology, content and detail that may usefully inform single case experimental design. Conclusions: This is a complex area of rehabilitation that can best support its service users and service commissioners by using tools that facilitate collaborative working. The findings suggest that it is possible to produce a data collection tool that is acceptable to all stakeholder perspectives.

Implications for Rehabilitation

• Augmentative and Alternative Communication/Assistive Technology should consider what types of data it is typically collecting and reporting.

• Augmentative and Alternative Communication/Assistive Technology could benefit from greater collaboration across stakeholder perspectives.

• Augmentative and Alternative Communication/Assistive Technology can contribute to effective single case experimental design methodologies.

• Adoption of case study guidelines may ensure consistent and sufficient data collection.

• Evidence-based practice
• low incidence
• single case experimental design
• subject heterogeneity

Acknowledgements

We would like to dedicate this publication to the second author, Alan Martin, who passed away before this paper was completed. His contribution was significant and inspiring.

This research study formed part of a research project commissioned and led by Communication Matters, the UK charity for augmentative and alternative communication (www.communicationmatters.org.uk). Grateful thanks to the many participants who informed this research.

Declarations of interest

The project was funded by the National Lottery through Big Lottery Fund. The authors report no conflicts of interest.

Notes

¹Communication Matters is a UK charity promoting research, knowledge and awareness of augmentative and alternative communication