Low legibility of Cognitive Reflection Test dramatically improves performance?

uzalud

I'm reading Kahneman's Thinking, Fast and Slow and I've stopped on this:

90% of the students who saw the CRT in normal font made at least one mistake in the test, but the proportion dropped to 35% when the font was barely legible. You read this correctly: performance was better with the bad font.

This seems like an important finding, but I can't find references in the book (Kindle) or on the Web. Does anybody know any real evidence for this claim? EDIT: I found the original paper

Do you think that people could behave rationally with such a simple intervention?

simple intro to CRT

EDIT: fixed spelling in title

I'm reading Kahneman's Thinking, Fast and Slow and I've stopped on this:

90% of the students who saw the CRT in normal font made at least one mistake in the test, but the proportion dropped to 35% when the font was barely legible. You read this correctly: performance was better with the bad font.

This seems like an important finding, but I can't find references in the book (Kindle) or on the Web. Does anybody know any real evidence for this claim? EDIT: I found the original paper

Do you think that people could behave rationally with such a simple intervention?

simple intro to CRT

EDIT: fixed spelling in title

Thanks! I've followed references and I think I have the original paper: http://pages.stern.nyu.edu/~aalter/intuitive.pdf

We recruited 40 Princeton University undergraduate volunteers at the student campus center to complete the three-item CRT (Frederick, 2005). Participants were seated either alone or in small groups, and the experimenter ensured that they completed the questionnaire individually. Those in the fluent condition completed a version of the CRT written in easy-to-read black Myriad Web 12-point font, whereas participants in the disfluent condition completed a version of the CRT printed in difficult-to-read 10% gray italicized Myriad Web 10-point font. Participants were randomly assigned to complete either the fluent or the disfluent version of the CRT (...) As predicted, participants answered more items on the CRT correctly in the disfluent font condition ... Whereas 90% of participants in the fluent condition answered at least one question incorrectly, only 35% did so in the disfluent condition.

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Low legibility of Cognitive Reflection Test dramatically improves performance?

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Low legibility of Cognitive Reflection Test dramatically improves performance?

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