Oddly Wired
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choice

You become blind to your own bad decisions.

In a 2005 experiment, participants were asked to choose between two faces, then asked to explain why they preferred their choice, despite the images being swapped without their knowledge. While 26% of participants failed to detect the mismatch and justified the 'choice' they hadn't made, the majority of participants did notice the swap.

The claim misrepresents the prevalence of choice blindness; the majority of participants were not blind to the swap.

Your reasons often arrive after your decision is made.

Where this comes from

Study
Johansson, Hall, Sikström, and Olsson, 2005
What the check found
The study exists and the findings are correctly attributed, but the framing of 'most' participants being blind contradicts the published detection rate of 74%.
Confidence
Well replicated
choicememoryintrospection

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.