This SAGE case study describes a laboratory experiment to study the benefits of small group citizen deliberation for individual political judgments. First an outline of theoretical approach of the study is given. Second, I discuss the main benefits, challenges, and shortcomings of conducting lab experiments in citizen deliberation. Close attention is paid in particular to the difficulty of measuring and manipulating a complex concept such as deliberation. Furthermore, I focus on some of the theoretical and methodological choices I made when designing and fielding my lab experiment.