Digital Citizen Science and the Motivations of Volunteers
In this chapter we focus on reviewing HCI research studies that help us to answer the question "What motivates volunteers to participate in digital citizen science?" First we present an overview of different kinds of digital citizen science projects. Then we describe and discuss HCI research studies that have explored volunteers' motivations and also the impact of gamification. We hope that these insights will help to give a better understanding of volunteers, as well as helping to inform the design of citizen science websites and mobile apps.