What is loss aversion in simple terms?

Losses feel about twice as painful as equivalent gains feel good, so people work harder to avoid losing than to win — often making poorer choices as a result.

How does loss aversion affect investing?

It makes investors hold losing positions too long (to avoid locking in a loss) and sell winners too early — the opposite of sound strategy.

How do you overcome loss aversion?

Judge options by their final outcome rather than gain/loss framing, imagine deciding fresh, and consciously discount the exaggerated sting of potential loss.

Loss aversion

Decision-making

Loss aversion is the tendency to feel the pain of a loss about twice as strongly as the pleasure of an equivalent gain. Losing €100 hurts more than gaining €100 delights — so we take irrational risks to avoid losses.

✦ Foundational — cross-referenced 27× across this reference (14 related ideas · 5 comparisons · 5 hubs · 2 books) · The State of Thinking 2026 →

By the ReadGlobe Editors · Reviewed 2026-05-29

Kahneman’s value function: the pain of a loss looms larger than the pleasure of an equal gain.

Why it happens

Losses register as a stronger emotional and neural signal than equivalent gains — an asymmetry that likely had survival value. The mind weights what it might lose far more heavily than what it might win, distorting otherwise rational choices.

Bad is stronger than good everywhere — one betrayal outweighs ten kindnesses.

Examples

Holding a losing investment to avoid “realizing” the loss.
Refusing a 50/50 bet to win €150 or lose €100, though the odds favour taking it.
Valuing something more the moment you own it — the endowment effect.

How to counter it

Frame decisions by final outcomes, not by gains versus losses.
Ask whether you’d make the same choice starting fresh today.
Recognize the roughly 2:1 emotional distortion and consciously discount it.

The deeper point

It’s why bad is stronger than good everywhere — one betrayal outweighs ten kindnesses, one outage ten smooth months. That’s not pessimism; it’s an asymmetry wired deeper than reason.

Frequently asked

What is loss aversion in simple terms?: Losses feel about twice as painful as equivalent gains feel good, so people work harder to avoid losing than to win — often making poorer choices as a result.
How does loss aversion affect investing?: It makes investors hold losing positions too long (to avoid locking in a loss) and sell winners too early — the opposite of sound strategy.
How do you overcome loss aversion?: Judge options by their final outcome rather than gain/loss framing, imagine deciding fresh, and consciously discount the exaggerated sting of potential loss.

Sunk-cost fallacy Framing effect Negativity bias Opportunity cost Margin of safety

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Where it’s shows up in

See this alongside the other thinking tools of investing and negotiation.

Where it bites

This bias distorts negotiation, investing and shopping & spending.

Go deeper

The book behind this idea: Thinking, Fast and Slow by Daniel Kahneman. Hear the whole thing free — start an Audible trial and your first audiobook is on the house.

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Read the full summary of Thinking, Fast and Slow →

More canonical picks:

The Art of Thinking Clearly — Rolf Dobelli
The Great Mental Models, Volume 1 — Shane Parrish
Poor Charlie’s Almanack — Charlie Munger
Super Thinking — Gabriel Weinberg & Lauren McCann
Seeking Wisdom — Peter Bevelin

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Cite this page

APA

ReadGlobe. (2026). Loss aversion. https://readglobe.com/bias/loss-aversion/

MLA

"Loss aversion." ReadGlobe, 29 May 2026, readglobe.com/bias/loss-aversion/.

Primary source: Wikipedia

Editorial synthesis © ReadGlobe 2026, drawing on Kahneman’s Thinking, Fast and Slow, the Tversky–Kahneman research program, and the primary cognitive-science literature. · Last reviewed 2026-05-29.