confirmation-biaslisted
Install: claude install-skill deciqAI/knowledge-skills
# Confirmation Bias
## Overview
**Confirmation bias** is the systematic tendency to seek, interpret, remember, and weight evidence in ways that support existing beliefs — and to correspondingly miss disconfirming evidence. It is the most-replicated finding in cognitive psychology, documented across cultures, expertise levels, and IQ ranges.
The canonical proof: Wason's 1960 "2-4-6 task" showed ~80% of subjects (including PhD scientists) confidently announced a wrong rule after testing only sequences they expected to confirm — never proposing a sequence designed to refute the hypothesis.
Composes with [`critical-thinking`](../critical-thinking/SKILL.md), [`bayesian-reasoning`](../bayesian-reasoning/SKILL.md), [`abductive-reasoning`](../abductive-reasoning/SKILL.md), and [`metacognition`](../metacognition/SKILL.md).
## When to Use
- A team is converging on a single answer too quickly
- You feel confident about a claim and haven't looked for evidence against it
- Research or due diligence keeps "validating" existing beliefs
- Someone says "cherry-picking," "echo chamber," or "looking for what you want to see"
**Not when:** explicit advocacy context; very low-stakes decision; cost of disconfirmation exceeds value of decision.
## Coaching Novices (Adaptive Front Door)
- **Engine mode:** user has a concrete case → run The Process directly.
- **Coach mode:** user is unfamiliar or has no concrete case → guide step by step.
In Coach mode, respond one step at a time. Each [WA