"Behavior Theory and Philosophy" is a significant non-fiction book based on a conference held at West Virginia University in April 2000. This conference honored the long-standing contributions of Hayne W. Reese to psychology, particularly in the areas of developmental psychology and the philosophical and conceptual questions that influence the entire discipline. The title of the book reflects the themes covered in a course developed by Professor Reese and Jon Krapfl in the late 1970s. The book brings together various perspectives and ideas that have shaped modern behavioral analysis, providing a deep insight into the theoretical foundations and philosophical considerations that support the understanding and analysis of behavior. It is a valuable resource for students and professionals interested in the complex relationships between behavior theory and philosophical approaches in psychology.