>Behavior theory is based on principles of behavior such as respondent conditioning, operant conditioning, reinforcement, and extinction. Some dozen or so such principles are identified and then applied not only to the behavior of skiing but also to how it can be taught.>

Jay Eacker is a professor emeritus and holds a doctorate in general experimental psychology but considers himself a behavior analyst. He has published two books on philosophical issues in psychology and is a Level II ski instructor. His ski teaching experience includes several seasons at Park City Mountain Resort in Utah as well as Ski Bluewood a small resort near Dayton, Washington. While there, his cohorts chose him instructor of the year. He is pictured here with his wife, Barbara Jones, who is also a Level II ski instructor.>