Hard-Easy Effect
Updated 2026-07-31
INTRODUCTION
English translation pending.
CORE DEFINITION
The hard-easy effect is a well-documented bias in confidence calibration. When questions are difficult, people overestimate the accuracy of their answers; when questions are easy, they underestimate it. As a result the calibration curve is distorted at both extremes and is closest to accurate at moderate difficulty. The bias affects experts as well as novices and is usually measured by comparing stated confidence against actual hit rates across many items.
SCAFFOLDING EFFECT
Reduce cognitive load
- Calibrating Confidence: lower your stated certainty on very hard problems and raise it on routine ones. - Allocating Margin: add buffer time and contingency where difficulty is high. - Learning from Records: use past hit rates instead of how confident you happen to feel.
Anchor fast decisions
Difficulty changes how much the available evidence constrains the answer. On hard items the evidence is thin, so confidence anchors on the sense of having an answer rather than on its quality. On easy items the answer feels too obvious to require confidence, so people discount it. The distortion is symmetric and comes from the same misreading of the evidence.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Hard%E2%80%93easy_effectverified
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