Department of Psychology, University of Toronto, Toronto, Ontario, Canada.
Q J Exp Psychol (Hove). 2022 May;75(5):808-817. doi: 10.1177/17470218211039479. Epub 2021 Aug 18.
The spatial-numerical association of response codes (SNARC) effect reflects the phenomenon that low digits are responded to faster with the left hand and high digits with the right. Recently, a particular variant of the SNARC effect known as the attentional SNARC (which reflects that attention can be shifted in a similar manner) has had notable replicability issues. However, a potentially useful method for measuring it was revealed by Casarotti et al. using a temporal order judgement (TOJ) task. Accordingly, the present study evaluated whether Casarotti et al.'s results were reproducible by presenting a low (1) or high (9) digit prior to a TOJ task where participants had to indicate which of two peripherally presented targets appeared first (Experiment 1) or second (Experiment 2). In Experiment 1, it was revealed that the findings of Casarotti et al.'s were indeed observable upon replication. In Experiment 2, when attention and response dimensions were put in opposition, the SNARC effect corresponded to the side of response rather than attention. Taken together, the present study confirms the robustness of the attentional SNARC in TOJ tasks, but that it is not likely due to shifts in attention.
数字-空间反应编码关联（SNARC）效应反映了这样一种现象，即低位数用左手反应更快，而高位数用右手反应更快。最近，一种被称为注意性 SNARC（反映了注意力可以以类似的方式转移）的特殊 SNARC 效应变体，其可重复性问题显著。然而，卡萨罗蒂等人使用时间顺序判断（TOJ）任务揭示了一种测量注意力性 SNARC 的有用方法。因此，本研究通过在 TOJ 任务之前呈现一个低（1）或高（9）数字，评估了卡萨罗蒂等人的结果是否具有可重复性，在该任务中，参与者必须指出两个外周呈现的目标中哪一个先出现（实验 1）或第二个（实验 2）。在实验 1 中，研究结果表明，卡萨罗蒂等人的发现确实可以在复制后观察到。在实验 2 中，当注意力和反应维度相对立时，SNARC 效应与反应而不是注意力的方向相对应。综上所述，本研究证实了在 TOJ 任务中注意性 SNARC 的稳健性，但它不太可能是由于注意力的转移所致。
