BiasFuture state forecasting · Cognitive Bias · Entry 118
Projection Bias – when you assume your future self will want what you want now
Do you think your future self will have the same preferences, habits, and values as you do now? That’s Projection Bias – the tendency to overestimate how much your future self will align with your current desires.
Where it can show up
- Purchases – people buy yearly gym memberships, assuming they’ll stay motivated just as they feel today.
- Career choices – a ‘dream job’ may seem perfect now, but interests and passions evolve over time.
- Relationships – assuming the excitement of a new relationship will last forever, without considering natural changes.
A practical countermeasure
- Remember, you change over time – your views, tastes, and desires evolve.
- Set flexible goals – plan with the expectation that priorities may shift.
- Reflect on past changes – think about how your preferences have shifted over the last 5–10 years and apply that insight.
Evidence review
established in intertemporal preference predictionWhat the evidence supports
Projection bias describes a tendency to overproject current tastes or visceral states onto future preferences. People often understand that tastes will change but underestimate how much they will change. The construct is most directly supported in intertemporal choice and consumer settings; it should not be stretched into a generic explanation for every bad prediction about one's future self.
How researchers describe the pattern
Current states provide a salient reference point for forecasting future utility. When people incompletely adjust away from today's tastes, hunger, weather, or other transient conditions, future choices can be distorted. Field and experimental evidence shows that current conditions can influence decisions whose consequences occur later even when those conditions will not persist.
Practical interpretation
For decisions that bind your future self, record the current state that may be contaminating the forecast: hunger, fatigue, mood, weather, novelty, or current preferences. Re-evaluate the decision in a meaningfully different state or use past preference changes as a reference class before making an expensive or difficult-to-reverse commitment.
Reviewed sources
- Projection Bias in Predicting Future Utility theory + evidence synthesis · 2003 · DOI 10.1162/003355303322552784
- Projection Bias in Catalog Orders field evidence · 2007 · DOI 10.1257/aer.97.4.1217
- Assessing Projection Bias in Consumers' Food Preferences incentivized experiment · 2016 · DOI 10.1371/journal.pone.0146308
Editorial review: 2026-08-18. Evidence status describes this entry, not every study ever published on the topic.
Evidence-linked concepts
Nearby ideas, with the relationship made explicit.
These links are reviewed separately from the original library’s related-entry suggestions. A relation means the concepts overlap or are often confused; it does not mean they are interchangeable.
Hot–Cold Empathy Gap – when one state is a poor guide to choices in another
Both concern forecasting across states. Projection bias emphasizes overprojecting current preferences into the future; the hot–cold empathy gap emphasizes failing to appreciate how a different visceral or affective state changes motivation and choice.
Open reviewed entryImpact Bias – when you overestimate how long or intense your emotions will be
Both distort predictions about the future self. Impact bias concerns the intensity or duration of future emotional reactions; projection bias concerns carrying current tastes or states too strongly into forecasts of future preferences.
Open reviewed entry