Prosocial behavior describes actions intended to benefit another individual or group of individuals. From collaborative editing tools like wikis to video sharing environments like YouTube, there are many computing applications and online spaces that rely on prosocial user behavior. The focus of this course is developing designs for computational applications/interventions to motivate prosocial behavior. Through readings, discussion, and design work, students will learn theories about prosociality from the social sciences and apply them in the design of systems that encourage prosocial behavior. The course will consist of readings, discussion, and groupwork focused on the development of mockups and functional prototypes.