Validation of a usability evaluation scale for ambient assisted living products or services according to the evaluator's perspective

摘要

Background: due to the challenges related to actual demographic ageing, Ambient Assisted Living emerges as a potentially effective solution to answer the needs of citizens; among other factors, usability is a relevant issue for the acceptance of Ambient Assisted Living products or services. Objective: the objective of this study is to validate an instrument, supported by the conceptual model of the International Classification of Functioning, Disability and Health, to evaluate the usability of Ambient Assisted Living products or services considering the opinion of the evaluator on the performance of the user. Methods: an observational study was setup involving a sample of 30 participants. Results: the results suggest appropriate values for the reliability and validity of the new instrument; additionally, it was found that the results present a statistically significant correlation with the evaluation of the user performance. Conclusions: the present study indicates that the new instrument can be a useful tool for the usability evaluation of Ambient Assisted Living products or services.