The size congruity effect in a numerical Stroop task shows that magnitude judgments of two numbers are faster and more accurate when the numerically larger number also appears in a physically larger size, indicating the interaction between numerical and physical magnitudes. It has recently been suggested that spatial shifts of attention between the two numbers may contribute to the size congruity effect. However, a complete line of evidence for the attentional attribution to the size congruity effect remains to be established. Therefore, the present study aimed to provide further demonstrations for the idea that spatial shifts of attention contribute to the size congruity effect during magnitude judgments regarding either the numerical or physical dimension of two numbers. Participants were sequentially or simultaneously presented with a pair of single-digit Arabic numbers whose numerical and physical magnitudes varied independently. They were instructed to perform a magnitude judgment regarding the numerical value or physical size of the paired numbers. Across three experiments, we consistently found that the size congruity effect was reduced or eliminated when number pairs were presented sequentially compared to when they were presented simultaneously. Because in the sequential presentation mode the paired numbers were successively presented at central fixation and therefore spatial attention shifts should be completely precluded by the central presentation of number stimuli, the present findings support the notion that spatial shifts of attention between numbers in the simultaneous presentation mode play an important role in generating the size congruity effect for both numerical and physical tasks.

数值 Stroop 任务中的大小一致性效应表明，当数值较大的数字也出现在物理较大的尺寸中时，两个数字的大小判断更快、更准确，表明数值和物理大小之间存在相互作用。最近有人提出，两个数字之间注意力的空间转移可能会导致大小一致效应。然而，关于尺寸一致性效应的注意力归因的完整证据仍有待确定。因此，本研究旨在进一步证明在关于两个数字的数值或物理维度的幅度判断过程中，注意力的空间转移有助于大小一致性效应的想法。参与者依次或同时看到一对一位数的阿拉伯数字，其数字和物理量级独立变化。他们被要求对成对数字的数值或物理大小进行大小判断。在三个实验中，我们一致发现，与同时呈现数字对相比，当数字对按顺序呈现时，大小一致性效应会降低或消除。因为在顺序呈现模式中，成对的数字在中心注视下连续呈现，因此空间注意力的转移应该被数字刺激的中心呈现完全排除，