This document discusses human learning and choice behavior. It covers concurrent schedules and how they are used in choice studies. The matching law is introduced, which states that relative response rates will match relative reinforcement rates. Applications of the matching law like in basketball, the NFL, sexual behavior, and drug taking are mentioned. Concurrent chain procedures are also discussed as a way to study complex choice. Finally, delay discounting and self-control are covered in relation to choosing larger later rewards over smaller sooner ones.