Behavioral finance presented in this book is the second-generation of behavioral finance. The first generation, starting in the early 1980s, largely accepted standard financeโs notion of peopleโs wants as โrationalโ wantsโrestricted to the utilitarian benefits of high returns and low risk. That first generation commonly described people as โirrationalโโsuccumbing to cognitive and emotional errors and misled on their way to their rational wants. The second generation describes people as normal. It begins by acknowledging the full range of peopleโs normal wants and their benefitsโutilitarian, expressive, and emotionalโdistinguishes normal wants from errors, and offers guidance on using shortcuts and avoiding errors on the way to satisfying normal wants. Peopleโs normal wants include financial security, nurturing children and families, gaining high social status, and staying true to values. Peopleโs normal wants, even more than their cognitive and emotional shortcuts and errors, underlie answers to important questions of finance, including saving and spending, portfolio construction, asset pricing, and market efficiency.