Smartphones are sensor-rich, computationally powerful, and near constant companions to their owners, providing researchers with unparalleled access to people’s behaviors as they unfold in their everyday lives. Moreover, smartphones can query people about their subjective psychological states (via notifications to respond to experience sampling survey questions). These features have paved the way for the use of smartphones as data-collection tools in social science research. In this course, participants will: (1) be introduced to mobile sensing methods, becoming familiar with the breadth of behavior and fidelity of measurement that is possible, (2) understand the practical, technical, and ethical considerations involved in conducting mobile sensing studies, and (3) get some hands-on experience planning a mobile sensing study and working with mobile sensing data. The course format will include a mix of lectures and discussions, as well as activities that will be guided by participants’ own research interests and needs. By the end of the course, participants will understand how to go about conducting mobile sensing research and will be prepared to integrate mobile sensing into their own methodological toolkit.