This volume consists of eight sections presenting debates on central issues in the general area of explanation and methodology in psychology. Each section includes a classic paper already published by a philosopher or cognitive scientist on a problem in the philosophy of psychology along with a response proposing a different view of the matter, followed by an original reply by the main contributor. The sections are forwarded by introductions written by the editors. Topics covered in the volume include: causal relevance, explanatory relevance, externalism and psychological explanation, biopsychology, connectionism and classical architecture, connectionism and eliminativism, tacit knowledge, and the unconscious and psychoanalytic explanation. Contributions to the volume include work by Fred Dretske, Ned Block, Ruth Garrett Millikan, Paul Smolensky, Cynthia and Graham Macdonald, Stephen Stich, Martin Davies, Tyler Burge, and Jim Hopkins.