Treat judgment difficulty as a signal to slow down

When a question feels easy to answer, that ease may mean your brain swapped it for a simpler one.

Why it works

Cognitive fluency — the ease with which a mental process runs — is used as a proxy for correctness. Questions that feel easy to answer receive less scrutiny. But attribute substitution makes hard questions feel easy by replacing them: the hard target question is silently dropped and the easy heuristic question runs instead. Using perceived ease as a flag for substitution — rather than as a confirmation of insight — reverses the usual heuristic.

How to do it

1. When a difficult judgment arrives with surprising ease, pause and ask: "Is this genuinely simple, or did I simplify it?"
2. Write out the target question in its full complexity.
3. If the question, stated fully, doesn’t match the answer you gave, you may have substituted.

Evidence

Cognitive fluency research shows that ease of processing is used as a cue for truth, familiarity, and validity. This effect is well documented but is a double-edged sword — ease can also signal genuine expertise. (observational)

Expert intuition also produces fast, easy, accurate answers. Ease is a flag for scrutiny, not proof of substitution — context matters.

Sources

• Reber & Schwarz (1999), cognitive fluency and truth judgments, Consciousness and Cognition

Common mistake

Applying this check to all fast judgments and second-guessing genuine expertise — the check is most valuable for high-stakes, novel, or socially charged decisions.