A reflection on cognitive reflection – testing convergent/divergent validity of two measures of cognitive reflection

Nikola Erceg, Zvonimir Galić and Mitja Ružojčić

Judgment and Decision Making, 2020, vol. 15, issue 5, 741-755

Abstract: The aim of the study was to test convergent/discriminant validity of two measures of cognitive reflection, cognitive reflection test (CRT) and belief bias syllogisms (BBS) and to investigate whether their distinctive characteristic of luring participants into giving wrong intuitive responses explains their relationships with various abilities and disposition measures. Our results show that the same traits largely account for performance on both non-lure task, the Berlin Numeracy Test (BNT), and CRT and explain their correlations with other variables. These results also imply that the predictive validity of CRT for wide range of outcomes does not stem from lures. Regarding the BBS, we found that its correlations with other measures were substantially diminished once we accounted for the effects of BNT. This also implies that the lures are not the reason for the correlation between BBS and these measure. We conclude that the lures are not the reason why cognitive reflection tasks correlate with different outcomes. Our results call into question an original definition of CRT as a measure of ability or disposition to resist reporting first response that comes to mind, as well as the validity of results of studies showing “incremental validity” of CRT over numeracy.

Date: 2020
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