This textbook provides readers with both the intuition and analytical tools to apply behavioral economics concepts in understanding the complex social world. Each part of the book covers a key concept, beginning with a range of empirical evidence that is anomalous within the standard economics framework. In light of this evidence, a second chapter introduces and applies a nonstandard behavioral modeling approach. The last chapter of each part explores market reactions and policy responses to individuals behaving in nonstandard ways. Numerous exercises of varying types and levels provide readers the opportunity to check and enrich their understanding. The book’s clear structure orients readers to the many concepts of behavioral economics. It also highlights the process by which economists evaluate evidence and disentangle theories with different social welfare implications. Accessible to students from diverse economic backgrounds, this textbook is an ideal resource for courses on behavioural economics, experimental economics and related areas. The accompanying Solutions Manual further extends learning and engagement.