|Author:||Wong, Shuk-kwan Barbara|
|Title:||Design for long-term behaviour change : an exploratory study in persuasive interactive systems for people with diabetes in self-management|
|Subject:||Persuasion (Psychology) -- Computer programs.|
Hong Kong Polytechnic University -- Dissertations
|Pages:||xvi, 443 : color illustrations|
|Abstract:||People with diabetes mellitus and many other chronic diseases are growing globally and they can cause heavy burdens to the individuals as well as the social and healthcare systems. Many people with chronic diseases require lifestyle change and adherence to the treatments for long term, which could be a challenge for them. A great amount of studies in the past decade have been starting to study different means to tackle the issues such as how technologies, especially digital technology to help to encourage more healthy behaviour and serve as an intervention in the self-care process. Persuasive design is one of the concepts of design for behaviour change using design and technology to influence attitudes or behaviour in certain ways. However, the persuasive and long term effects of different persuasive strategies including narrative and statistical form of persuasive systems are mixed and not well understood. Moreover, the experiential aspects, the user values, as well as the contextual factors are seldom considered in many of these systems. Nevertheless, these factors could affect the motivation and persuasive effects for long-term behaviour change. This study is to explore how persuasive interactive systems could help to motivate and persuade people with diabetes to engage in self-management and perform more healthy behaviour over time. It involves a comprehensive literature review from multi-disciplines including health psychology, communication theories, and human-computer-interaction; and a systematic research design using interviews, contextual inquiry, system evaluations and a design prototype with mixed research methods to gain a more holistic understanding of the issues. The findings discovered several challenges in diabetes management including diet control and physical exercises, which were influenced by internal and external resources of the patients. It was also found that narrative form of persuasion was more effective than the graphical and statistical form which was mainly due to the usability problems of the systems. Several system attributes were noticed to affect the user experience, and in turn they influenced the persuasion effects and user engagement. The user needs and values of the systems were also identified for user motivation over long term system use. Finally, the study also recognized several user contexts and contexts of use could affect the effectiveness of motivation and persuasion strategies. The study proposes that adapting the theories in positive psychology and well-being could help to sustain motivation in the long term. Several models and frameworks of design for maintaining behaviour change are proposed, and design principles and guidelines for developing and evaluation for these kinds of systems are also suggested. As an exploratory study, this study enriches the knowledge of the design concepts and provides insights for future development of persuasive design, not only in chronic care, but also other design interventions for sustained behaviour change.|
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