Don't Shoot the Dog!: The New Art of Teaching and Training
"In the course of becoming a renowned dolphin  trainer, Karen Pryor learned that positive  reinforcement (the only kind useable with dolphins, who can't  be reached with leashes, bridles, fists, or yells)  is even more potent that prior scientific work had  suggested. . .This new book looks like the very  best on the subject--a full-scale  mind-changer."--Stewart Brand,The Coevolution  Quarterly.