Weis Tina, Theobald Steffen, Schmitt Andreas, van Leeuwen Cees, Lachmann Thomas
Cognitive and Developmental Psychology, Center for Cognitive Science, University of Kaiserslautern, Kaiserslautern, Germany.
Experimental Psychology Unit, KU Leuven, Leuven, Belgium.
Front Psychol. 2018 Oct 17;9:1978. doi: 10.3389/fpsyg.2018.01978. eCollection 2018.
The effect involves interference between numerical magnitude and physical size of visually presented numbers: numbers (either both small or both large in numerical magnitude and physical size) are responded to faster than ones (small numerical magnitude/large physical size or vice versa). Besides, numerical magnitude is associated with lateralized response codes, leading to the Spatial Numerical Association of Response Codes (SNARC) effect: small numerical magnitudes are preferably responded to on the left side and large ones on the right side. Whereas size congruity effects are ascribed to interference between stimulus dimensions in the decision stage, SNARC effects are understood as (in)compatibilities in stimulus-response combinations. Accordingly, size congruity and SNARC effects were previously found to be independent in parity and in physical size judgment tasks. We investigated their dependency in numerical magnitude judgment tasks. We obtained independent size congruity and SNARC effects in these tasks and replicated this observation for the parity judgment task. The results confirm and extend the notion that size congruity and SNARC effects operate in different representational spaces. We discuss possible implications for number representation.
数字（数值大小和物理尺寸均小或均大）的反应速度比数字（数值小/物理尺寸大或反之亦然）更快。此外，数值大小与侧向化反应编码相关联，从而导致反应编码的空间数字关联（SNARC）效应：较小的数值大小更倾向于在左侧做出反应，而较大的数值大小则在右侧做出反应。虽然大小一致性效应归因于决策阶段刺激维度之间的干扰，但SNARC效应被理解为刺激 - 反应组合中的（不）兼容性。因此，先前发现大小一致性和SNARC效应在奇偶性和物理尺寸判断任务中是独立的。我们研究了它们在数值大小判断任务中的依赖性。我们在这些任务中获得了独立的大小一致性和SNARC效应，并在奇偶性判断任务中重复了这一观察结果。结果证实并扩展了大小一致性和SNARC效应在不同表征空间中起作用的观点。我们讨论了对数字表征的可能影响。
