◈ GLOSSARY · MONEY MINDSET
Behavioral Finance.
A definition, in plain English — with the books that teach it.
Reviewed by ClearValue Editorial Team · Jun 27, 2026
◈ DEFINITION
What it means
Definition
The study of how real human psychology — fear, ego, mental shortcuts — shapes money decisions, instead of assuming people are perfectly rational. It's the field that explains why smart people sell at the bottom and buy at the top. The honest caveat: knowing about a bias doesn't make you immune to it; you still have to design rules and systems that catch you before you act on it.
◈ IN PRACTICE
Example
In March 2020 the S&P 500 fell ~34% in five weeks. A rational model says 'stocks are on sale, buy more.' Behavioral finance predicts what actually happened: record outflows from equity funds as people sold at the lows and missed a 70%+ rebound over the next year.
◈ RECOMMENDED READING
