A previous study used days as a sequence symbol to investigate the interaction mechanism between location and sequence in sequence symbol cognition; the study findings suggested that the spatial stimulus-response compatibility effect and the Simon effect could not co-exist with the SNARC-like effect when processing sequence symbols. The previous study did not include the influence of the difficulty of identifying sequence symbols on the Simon effect in the investigation, so it is unclear whether the conclusion about processing sequence symbols with considerable identification difficulty can be extended to the processing of sequence symbols with less identification difficulty. Therefore, the present study explored letters that have a low level of identification difficulty to investigate the interaction mechanism between location and sequence in sequence symbol cognition. Participants were asked to classify a probe letter, which was randomly displayed on the left or right side of the screen, according to its location (Experiment 1), its sequence (Experiment 2) or its colour (Experiment 3). The results indicated that (1) only the spatial stimulus-response compatibility effect and Simon effect were present in the letter location classification task and letter colour classification task, respectively. (2) The Simon effect co-existed with the SNARC-like effect, and these two effects interacted with each other in the letter sequence classification task. From these results, it can be concluded that the task determines whether the Simon effect and the SNARC-like effect can co-exist, with differences presented across sequence symbols.

先前的研究使用天作为序列符号来研究序列符号认知中位置和序列之间的相互作用机制。研究发现表明，在处理序列符号时，空间刺激-反应相容效应和西蒙效应不能与类似于SNARC的效应共存。先前的研究没有在研究中包括识别序列符号的难度对西蒙效应的影响，因此目前尚不清楚关于处理具有较大识别难度的序列符号的结论是否可以扩展到识别次数较少的序列符号的处理。困难。所以，本研究探索了具有较低识别难度的字母，以研究序列符号识别中位置与序列之间的相互作用机制。要求参与者根据其位置（实验1），序列（实验2）或颜色（实验3）对探测字母进行分类，该探测字母随机显示在屏幕的左侧或右侧。结果表明：（1）字母位置分类任务和字母颜色分类任务分别只存在空间刺激-反应相容效应和西蒙效应。（2）西蒙效应与类SNARC效应共存，并且这两个效应在字母序列分类任务中相互影响。根据这些结果，