A Personalized Health Behavior System

The proposed study will evaluate a new tablet‐based dynamic system: the Fittle Senior System (FSS) that will provide: (1) personalized, goal‐directed behavior‐change programs for improved diet and increased physical activity and (2) online social interaction and support from small teams pursuing similar goals. The system builds on two technology‐based systems developed by the investigative team: (1) the computer‐based PRISM system (Czaja et al., 2015), designed for older populations to support social connectivity and well‐being, and (2) the Fittle mobile platform (PARC) designed to support positive health behavior change through integrated online social support and personalized coaching based on artificial intelligence (AI). The Fittle program is based on Self‐efficacy and Social Cognitive Theory (Bandura, 1998, 2001), Goal Setting (Locke & Latham, 2002) and the Theory of Planned Behavior (Ajzen, 1991). Fittle provides support for individuals and teams to progress through lifestyle challenges (e.g., poor eating habits, sedentary behavior), helping individuals master one health improving habit after another in a way that builds on previous achievements. Individuals choose from a variety of challenges to accomplish goals via an intelligent coaching agent and personalized, engaging user experiences. The objective is to maintain and reinforce perceived self‐efficacy with daily goals that are perceived as being achievable, and to improve motivation and ability with goals that are perceived as not too easy. The program provides encouragement and social support through a team component. Thus, Fittle is designed to reinforce and build self‐efficacy and positive attitudes.