A 10-week seminar in self-control for 25 selected junior and senior psychology majors at the College of Wooster is described. The seminar was developed in response to increasing popularity of behavior modification and an interest in exploring applications of a science of behavior. The didactic aspect of the course was complemented by an applied emphasis in which each student selected a relatively benign behavior, devised a self-modification procedure, quantitatively evaluated his progress, and submitted a scientific report in the American Psychological Association (APA) publication format. Target behaviors ranged from smoking to assertive behavior and negative comments about others. Short-term gains were reported in most of the programs. Other benefits to students may have included involving oneself in the application of psychology, developing a more scientific approach to solving everyday problems in living, and fostering a less negative attitude toward the control of behavior. The paper concludes with an annotated bibliography of four texts suitable for use in undergraduate self-modification seminars. (Author/AV)