Preface. Introduction. 1. On the Role of the Reinforcer in Associative Learning R. G. Weisman 2. A Note on the Operant Conditioning of Autonomic Responses A. H. Black, B. Osborne, W. C. Ristow 3. Sensitivity of Different Response Systems to Stimulus-Reinforcer and Response-Reinforcer Relations H. M. Jenkins 4. Performance on Learning to Associate a Stimulus with Positive Reinforcement R. A. Boakes 5. Behavioral Competition in Conditioning Situations: Notes Toward a Theory of Generalization and Inhibition J. E. R. Staddon 6. Pavlovian Second-Order Conditioning: Some Implications for Instrumental Behavior Robert A. Rescorla 7. The Safety Signal Hypothesis Martin E. P. Seligman, Yitzchak M. Binik 8. Aversively Controlled Behavior and the Analysis of Conditioned Suppression Harry M. B. Hurwitz, A. E. Roberts 9. Response Characteristics and Control During Lever-Press Escape Hank Davis 10. Conditioning Food-Illness Aversions in Wild Animals: Caveat Cononici John Garcia, Kenneth W. Rusiniak, Linda P. Brett. Author Index. Subject Index.