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:: COMPARE ::

Confirmation biasvsMotivated reasoning

The short answer

Confirmation bias is about which evidence you look at; motivated reasoning is about wanting a particular answer. The distinction matters because you can show confirmation bias with nothing at stake at all — Wason's number triples had no emotional content whatsoever.

Side by side

AspectConfirmation biasMotivated reasoning
Driven byTest strategyDesired conclusion
Needs a stakeNoYes
ConsciousRarelySometimes
FixTest the oppositeName the want

What each one means

Confirmation Bias

Confirmation bias is the tendency to notice, seek out and believe information that fits what you already think — while giving far less weight to whatever would prove you wrong.

Full definition of Confirmation Bias

Motivated reasoning

The contrast above sets out how Motivated reasoning differs from Confirmation Bias on the points that actually matter.