Abstract
The cognitive reflection test (CRT) is a widely used measure of the propensity to engage in analytic or deliberative reasoning in lieu of gut feelings or intuitions. CRT problems are unique because they reliably cue intuitive but incorrect responses and, therefore, appear simple among those who do poorly. By virtue of being composed of so-called “trick problems” that, in theory, could be discovered as such, it is commonly held that the predictive validity of the CRT is undermined by prior experience with the task. Indeed, recent studies have shown that people who have had previous experience with the CRT score higher on the test. Naturally, however, it is not obvious that this actually undermines the predictive validity of the test. Across six studies with ~ 2,500 participants and 17 variables of interest (e.g., religious belief, bullshit receptivity, smartphone usage, susceptibility to heuristics and biases, and numeracy), we did not find a single case in which the predictive power of the CRT was significantly undermined by repeated exposure. This occurred despite the fact that we replicated the previously reported increase in accuracy among individuals who reported previous experience with the CRT. We speculate that the CRT remains robust after multiple exposures because less reflective (more intuitive) individuals fail to realize that being presented with apparently easy problems more than once confers information about the task’s actual difficulty.
Highlights
The cognitive reflection test (CRT) is a widely used measure of the propensity to engage in analytic or deliberative reasoning in lieu of gut feelings or intuitions
Those who do well on the CRT are less prone to rely on heuristics and biases even after measures of cognitive ability have been taken into account (Toplak, West, & Stanovich, 2011, 2014)
BFull sample^ is the sum of all participants, regardless whether or not they declared their experience with the CRT, but particular subsamples do not include the individuals who failed to declare their previous experience with the CRT. * Via Toplak, West, & Stanovich (2014). ** The Ns were variable for Pennycook, Ross, et al (2016) because the data set was the combination of four separate studies that had used different combinations of variables
Summary
A set of six experiments with almost 2,500 participants was used to test the effect of previous exposure on the CRT. We compared participants who declared (when asked directly) that they had seen at least one CRT item before (Bexperienced^) with participants who had no recollection of prior exposure (Bunexperienced^). The results include data from every published or submitted manuscript (in which one of the present authors was a lead (or co-lead) author of the study) that had asked participants about prior experience with the CRT. The data for all studies are available at the Open Science Framework: https://osf.io/kawv8/
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