Lim Chae Eun, Cho Yang Seok
Department of Psychology, Korea University, 145 Anam-ro, Seongbuk-Gu, Seoul, 02841, Korea.
Psychol Res. 2021 Jul;85(5):2047-2068. doi: 10.1007/s00426-020-01376-3. Epub 2020 Jun 26.
The present study investigated how response mode determines the specificity of control responsible for the congruency sequence effect (CSE), especially when conflict arises from spatial dimensions. Horizontal and vertical Simon tasks were presented in turn, while response mode (Experiment 1) or task-relevant stimulus dimension (Experiment 2) was manipulated. All responses were made by aimed movements to make the relative salience of the horizontal and vertical dimensions equivalent regardless of response mode. The confound-minimized CSEs were significant only when the two tasks shared the same response mode, which did not vary as a function of task-relevant stimulus dimension. This result suggests that response mode determines the scope of control, as it reconfigures the representations of the task-irrelevant spatial dimensions (i.e., the horizontal and vertical dimensions), which is corroborated by distributional analyses. This response mode-specific control was also consistently found for the horizontal and vertical arrow versions of flanker-compatibility tasks in Experiment 3, in which conflict does not directly arise from the response dimension. Furthermore, the current findings revealed that the CSEs were more evident in movement times than in initiation times, which provides new insight on how control inhibits the response activated by a task-irrelevant stimulus dimension, especially at a motor level.
本研究调查了反应模式如何决定负责一致性序列效应（CSE）的控制的特异性，尤其是当冲突源于空间维度时。依次呈现水平和垂直西蒙任务，同时操纵反应模式（实验1）或与任务相关的刺激维度（实验2）。所有反应均通过有目标的动作做出，以使水平和垂直维度的相对显著性相等，而不考虑反应模式。仅当两个任务共享相同的反应模式时，最小化混淆的CSE才显著，且其不会随与任务相关的刺激维度而变化。该结果表明，反应模式决定了控制的范围，因为它重新配置了与任务无关的空间维度（即水平和垂直维度）的表征，分布分析证实了这一点。在实验3的侧翼兼容性任务的水平和垂直箭头版本中也始终发现了这种特定于反应模式的控制，其中冲突并非直接源于反应维度。此外，当前研究结果表明，CSE在运动时间上比在启动时间上更明显，这为控制如何抑制由与任务无关的刺激维度激活的反应提供了新的见解，尤其是在运动水平上。
