Background The personalization of conversational agents with natural language user
interfaces is seeing increasing use in health care applications, shaping the content …

Background: Although many smartphone apps and wearables have been designed to
improve physical activity, their rapidly evolving nature and complexity present challenges for …

Mobile, wearable and other connected devices allow people to collect and explore large
amounts of data about their own activities, behavior, and well-being. Yet, learning from-, and …

Research exploring how to support decision-making has often used machine learning to
automate or assist human decisions. We take an alternative approach for improving decision …

Personal informatics (PI) systems have been developed to support reflection. While
reflection is considered an indispensable activity in PI use, how and when reflection occurs …

Background Low physical activity is an important risk factor for common physical and mental
disorders. Physical activity interventions delivered via smartphones can help users maintain …

People stop using personal tracking tools over time, referred to as the lapsing stage of their
tool use. We explore how designs can support people when they lapse in tracking …

Physical activity (PA) is crucial for reducing the risk of obesity, an epidemic that
disproportionately burdens families of low-socioeconomic status (SES). While fitness …

Goal setting is critical to achieving desired changes in life. Many technologies support
defining and tracking progress toward goals, but these are just some parts of the process of …

Identifying and planning strategies that support a healthy lifestyle or manage a chronic
disease often require patient-provider collaboration. For example, people with healthy …