The aim of this book is to achieve a high level of synthesis regarding learning theory and behavior. The author attempts to do so by examining both research and conjecture in a broadly historical context, in addition to presenting new experimental findings not available to earlier system makers and theorists. In this way, it is believed, empirical facts and divergent theories become maximally meaningful and most significantly related. The book begins with an introductory chapter that presents a historical review and perspective of the field of learning theory. Chapter 2 examines the law of effect, conditioning, and punishment. Chapter 3 discusses two versions of two-factor learning theory. In the fourth chapter, two conceptions of secondary reinforcement are presented. Chapters 5 and 6 continue the examination of secondary reinforcement with discussions of a unifying theory and reservations and complications. The topics of Chapter 7 are a revised two-factor theory and the concept of habit, followed by Chapter 8 which comparatively examines other theories and some further evidence. Hope, fear, and field theory are the focus of Chapter 9, and Chapter 10 focuses on reinforcement gradients and temporal integration. The book closes with two chapters on unlearning, conflict, frustration, courage, generalization, discrimination, and skill. The basic argument proposed by the author is epitomized in Chapter 7. Earlier chapters provide the logical and factual background from which this argument evolves; and the five subsequent chapters amplify and apply the argument in more specific ways. Thus, the reader who wishes a quick "look" at this volume as a whole may first read the chapter indicated; but the argument will unfold most naturally and persuasively if the chapters are read in the order in which they appear.--(Created by APA).