Victoria Bellotti

Automated coaching systems offer a convenient, cost-effective way to reduce stress, which can be a serious health issue. However, one concern with such systems is compliance; users fail to achieve daily stress reduction goals because goals are too easy or too difficult. To address this, we built DStress (Design for Stress), a theoretically grounded system that sets adaptive goals in three coaching dimensions: Exercise, Meditation and Accessibility. DStress modifies goal-difficulty based on the… Show more

Automated coaching systems offer a convenient, cost-effective way to reduce stress, which can be a serious health issue. However, one concern with such systems is compliance; users fail to achieve daily stress reduction goals because goals are too easy or too difficult. To address this, we built DStress (Design for Stress), a theoretically grounded system that sets adaptive goals in three coaching dimensions: Exercise, Meditation and Accessibility. DStress modifies goal-difficulty based on the individual’s immediately previous performance. In a 28-day deployment with 65 users, DStress reduced scores on one direct measure of stress almost in half, significantly more than two other non-adaptive coaching strategies. However, on a second direct stress measure, no improvement was found. There were also no improvements on other indirect stress measures. Analysis of 2842 user-generated reports suggests our findings were the result of DStress balancing compliance against the degree of challenge of the goals it would set. Show less

Commercial peer-to-peer service exchange businesses, such as AirBnB, Lyft and TaskRabbit, are expanding rapidly, but their non-profit counterparts are lagging behind. We conducted a field study of the most prominent of these, timebanking; a system in which 'time dollars' are earned and spent by people providing services for and receiving them from each other. Our study exposed problems with the very metaphor of banking itself, which deter participation. In this paper we discuss how these… Show more

Commercial peer-to-peer service exchange businesses, such as AirBnB, Lyft and TaskRabbit, are expanding rapidly, but their non-profit counterparts are lagging behind. We conducted a field study of the most prominent of these, timebanking; a system in which 'time dollars' are earned and spent by people providing services for and receiving them from each other. Our study exposed problems with the very metaphor of banking itself, which deter participation. In this paper we discuss how these problems can be tackled with user experience design for systems supporting timebanking. Our design ideas emphasize the personal and social benefits of participation, and avoid such unappealing concepts as debt and neediness that the timebanking metaphor falls afoul of. Show less

We present a preliminary taxonomy of gamification elements for designing ways to engage users of a computer-based service, given different levels of expected engagement and willingness to commit time to interaction.

Awareness of individual and group activities is critical to successful collaboration and is commonly supported in CSCW systems by active, information generation mechanisms separate from the shared workspace. These mechanisms penalise information providers, presuppose relevance to the recipient, and make access difficult. We discuss a study of shared editor use which suggests that awareness information provided and exploited passively through the shared workspace, allows users to move smoothly… Show more

Awareness of individual and group activities is critical to successful collaboration and is commonly supported in CSCW systems by active, information generation mechanisms separate from the shared workspace. These mechanisms penalise information providers, presuppose relevance to the recipient, and make access difficult. We discuss a study of shared editor use which suggests that awareness information provided and exploited passively through the shared workspace, allows users to move smoothly between close and loose collaboration, and to assign and coordinate work dynamically. Passive awareness mechanisms promise effective support for collaboration requiring this sort of behaviour, whilst avoiding problems with active approaches. Show less