The basic book about the controversial philosophy known as behaviorism, written by its leading exponent. Bibliography, index.

1. The causes of behavior -- 2. The world within the skin -- 3. Innate behavior -- 4. Operant behavior -- 5. Perceiving -- 6. Verbal behavior -- 7. Thinking -- 8. Causes and reasons -- 9. Knowing -- 10. The inner world of motivation and emotion -- 11. The self and others -- 12. The question of control -- 13. What is inside the skin? -- 14. Summing up.