Usability of an intelligent virtual assistant for promoting behavior change and self-care in older people with Type 2 Diabetes

João Balsa*, Isa Félix, Ana Paula Cláudio, Maria Beatriz Carmo, Isabel Costa e. Silva, Ana Guerreiro, Maria Guedes, Adriana Henriques, Mara Pereira Guerreiro

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

12 Citações (Scopus)

Resumo

In the context of the VASelfCare project, we developed an application prototype of an intelligent anthropomorphic virtual assistant. Designed as a relational agent, the virtual assistant has the role of supporting older people with Type 2 Diabetes Mellitus (T2D) in medication adherence and lifestyle changes. Our paper has two goals: describing the essentials of this prototype, and reporting on usability evaluation. We describe the general architecture of the prototype, including the graphical component, and focus on its main feature: the incorporation, in the way the dialogue flows, of Behavior Change Techniques, identified through a theoretical framework, the Behaviour Change Wheel. Usability was experimentally evaluated in field tests in a purposive sample of 20 participants (11 older adults with T2D and 9 experts). The Portuguese version of the System Usability Scale was employed, supplemented with qualitative data from open questions, diaries, digital notes and telephone follow-ups. The aggregated mean SUS score was 73,75 (SD 13,31), which corresponds to a borderline rating of excellent. Textual data were content analyzed and will be prioritized to further improve usability.
Idioma originalEnglish
Número do artigo130
RevistaJournal of Medical Systems
Volume44
Número de emissão7
DOIs
Estado da publicaçãoPublicado - 1 jul 2020
Publicado externamenteSim

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