Describing and measuring the ‘switch-on’ effect in people with dementia who participate in cognitive stimulation therapy: A mixed methods study

Abstract

Introduction: Cognitive stimulation therapy is an evidence-based group intervention for promoting cognition and quality of life in people with dementia. This New Zealand study aimed to describe and measure the ‘switch-on’ effect, a recently reported benefit involving enhanced participation. Method: A convergent parallel mixed methods design was implemented. Interviews guided by qualitative descriptive methodology were conducted with four community-dwelling men with mild dementia and their wives, before, during and after cognitive stimulation therapy. Concomitantly, participants with dementia were scored on the Volitional Questionnaire following a single-subject A–B design. Qualitative and quantitative data were analysed using NVivo-assisted thematic analysis and descriptive statistics respectively and conjointly. Findings: ‘Switch-on’ was found to be multi-dimensional in nature, with increased engagement and expanded scope in Doing, Feeling, Relating, and Thinking and Reflecting. ‘Switch-on’ occurred with a noticeable onset within 3 weeks, which was sustained and consolidated towards completion of cognitive stimulation therapy in both group and home environments. Three men showed concurrent improvements on the achievement sub-scale of the Volitional Questionnaire. However, the measure did not effectively capture ‘switch-on’ due to its ceiling effect. Conclusion: Findings about ‘switch-on’ suggest broader, under-researched benefits of cognitive stimulation therapy that merit further exploration from an occupational therapy perspective.