Polarity correspondence in comparative number magnitude judgments

Reber, Rolf; Wurtz, Pascal; Knapstad, Marit; Lervik, Linn Vathne (2010). Polarity correspondence in comparative number magnitude judgments. Psychonomic bulletin & review, 17(2), pp. 219-223. New York, N.Y.: Springer 10.3758/PBR.17.2.219

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When asked which of two digits is greater, participants respond more quickly if physical size corresponds to number magnitude, such as in 3 7, than when the two attributes contradict each other, such as in 3 7. This size congruence effect in comparative number judgments is a well-documented phenomenon. We extended existing findings by showing that this effect does not depend on physical size of the number alone but can be observed with number symmetry. In addition, we observed that symmetric numbers are judged as being smaller than asymmetric numbers, which renders an interpretation of the number symmetry congruence effect in terms of physical size implausible. We refer to the polarity correspondence principle (Proctor & Cho, 2006) to explain the present findings.

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