‘Robert West’s erudite, lucidly written Theory of Addiction takes the reader on an engaging tour of almost every significant conceptual system in the field … West adroitly finds gold amongst the lead, adds some previous gems of his own, and presents the field with a real treasure: an integrated, useful, thought-provoking and testable theory of addition.’ Keith Humphreys, PhD, Associate Professor of Psychiatry, Stanford University School of Medicine