Recency Bias
Memory & Judgment
Recency bias is the tendency to give more weight to recent events than to older ones, assuming that what just happened is more likely to keep happening.
What it looks like
After three sunny weekends, you book an outdoor wedding venue assuming the weather will cooperate. After one bad restaurant meal, you swear off a place you've enjoyed for years.
Voters often judge leaders on the last few months before an election rather than the full term — recent events simply feel more available and more predictive.
In trading and money decisions
After three winning trades, a trader feels invincible and sizes up; after three losers, they abandon a strategy with years of solid results. The last handful of outcomes drowns out the long-run evidence.
Recency bias also drives performance chasing: buying last year's top fund or the sector that just rallied, on the assumption the recent trend is the new normal.
Common questions
- What is the recency effect?
- The recency effect is the related memory finding that people recall the last items in a list best. Recency bias is the decision-making version: recent information is overweighted when judging what comes next.
- How do you counter recency bias in trading?
- Keep a written record of every trade and review the full sample, not the last week. Judge strategies on at least dozens of outcomes, and write down your plan before the recent results can rewrite it.
- Why does recency bias happen?
- Recent memories are easier to retrieve, so the brain treats them as more representative. It's a shortcut that works in stable environments but fails badly in noisy ones like markets.
Related biases
- Hindsight BiasHindsight bias is the tendency, after an outcome is known, to see it as having been obvious and predictable all along — the I-knew-it feeling that rewrites what you actually believed beforehand.
- Anchoring BiasAnchoring bias is the tendency to rely too heavily on the first piece of information you encounter — the anchor — when making judgments, even when that number is arbitrary or irrelevant.
- Confirmation BiasConfirmation bias is the tendency to seek out, favor, and remember information that supports what you already believe — while dismissing or never even encountering evidence against it.
- FOMO / HerdingFOMO (fear of missing out) and herding are the twin tendencies to follow the crowd — buying because everyone else is buying, and treating other people's behavior as evidence that they know something you don't.
Check your own reasoning
Paste the thinking behind your next decision and see which biases are likely shaping it.
Open the Bias Checker