behavioral finance
A field combining psychology and economics to explain why investors make irrational decisions, identifying cognitive biases that lead to poor investment outcomes.
Example
“Behavioral finance explains why investors panic-sell at market bottoms and greedily buy at tops — the opposite of rational behavior.”
Memory Tip
BEHAVIORAL finance = studying why humans make BAD money decisions. Awareness helps you avoid traps.
Why It Matters
Understanding behavioral finance helps you recognize your own financial blind spots and avoid costly mistakes. By knowing about cognitive biases, you can make more rational investment decisions and build better long-term wealth instead of being driven by fear or greed.
Common Misconception
Many people believe that investors are purely rational actors who always make logical decisions based on available information. In reality, emotions, mental shortcuts, and psychological patterns significantly influence how people handle money and investments, often leading to losses that pure logic would avoid.
In Practice
During a market downturn in 2020, an investor who understood behavioral finance recognized their urge to sell all stocks at a 30 percent loss as panic selling bias. Instead of acting on fear, they stayed invested and watched their portfolio recover to a 45 percent gain two years later, while others who sold missed the rebound entirely.
Etymology
BEHAVIORAL (relating to behavior) FINANCE (money management). How human BEHAVIOR affects FINANCIAL decisions.
Common Misspellings
Start investing with no commission trades
Related Terms
More in investing
Other investing terms you should know
See Also
Need financial definitions?
Clear definitions for 2,500+ finance, insurance, and investing terms.