Assessment of an interactive television that supports social connectedness among older adults living at home and in geriatric institutions: Usability and task performance analysis.

Introduction: Increasingly, geriatric institutions are adopting video calling services to promote social interactions between residents and their loved ones. However, a gap persists between the technologies used and the needs and abilities of older users. Interactive Televisions (iTVs) could be part of the solution as they provide a familiar and accessible way to strengthen the relationship between residents and their environment (family, friends, professionals). Methods: User tests were conducted to evaluate the ability of older adults (OAs) from different place of living to use iTV. A total of 32 user tests were carried out with OAs living at home, in residential facilities (RFs), and in nursing homes (NHs) between November 2022 and June 2023. Results: The quantitative analysis revealed mixed opinions on the iTV's usability. OAs living at home tended to produce less errors and needed less help to successfully use video calling and messaging functionalities of the iTV than others. However, participants in NHs required more repetitions to benefit from a learning effect, unlike participants in RFs and at home. Conclusions: This study proposed another approach to user testing, based on cognitive psychology methods. Based on the analysis of the critical stages, ergonomic recommendations were identified.