The present study was aimed to introduce the Cognitive Reflection Test (CRT) which measures cognitive reflection and to investigate differences in reaction time for each type of answer, gender differences of CRT scores, and relationship with higher level processes. To solve CRTs, one has to suppress what intuitively comes to mind and find out a correct answer with more elaborate processing. Thus, the System 1 and System 2 should be flexibly used. Participants were given a CRT-long version and scales for a need for cognition, critical thinking, and belief in science.
Expectedly, reaction time for intuitive wrong answer was shorter than that for non-intuitive correct answer. However, a gender difference of CRT scores was not observed. With regard to higher level processes, CRT scores was correlated with a need for cognition and critical thinking and negatively correlated with belief in science. Findings and applicability of CRT were discussed.