It has always been an important task of economics to assess individual and social welfare. The traditional approach has assumed that the measuring rod for welfare is the satisfaction of the individual’s given and unchanging preferences, but recent work in behavioural economics has called this into question by pointing out the inconsistencies and context-dependencies of human behaviour. When preferences are no longer consistent, we have to ask whether a different measure for individual welfare can, and should, be found. This book goes beyond the level of preference and instead considers whether a hedonistic view of welfare represents a viable alternative, and what its normative implications are. Offering a welfare theory with stronger behavioural and evolutionary foundations, Binder follows a naturalistic methodology to examine the foundations of welfare, connecting the concept with a dynamic theory of preference learning, and providing a more realistic account of human behaviour.This book will be of interest to researchers and those working in the fields of welfare economics, behavioural and evolutionary economics.