Data from an experiment investigating how grasping experiences affect mapping and correspondence effects between stimulus size and response location

This data set contains the raw data files from the experiment reported in: Richter, M. & Wühr, P. (2024). Different grasping experiences affect mapping effects but not correspondence effects between stimulus size and response location. Submitted to Psychological Research. Here is the abstract of the paper: The so-called spatial-size association of response codes (SSARC) effect denotes that humans respond faster and more accurately with a left response to physically small stimuli and a right response to physically large stimuli, as compared to the opposite mapping. According to an application of the CORE principle to the SSARC effect, the habit to grasp larger/heavier objects with one’s dominant hand and smaller/lighter objects with one’s non-dominant hand creates spatial-size associations. We investigated if grasping habits play a causal role in the formation of spatial-size associations by testing if the mapping of a preceding object-grasping task affects the size of the SSARC effect in subsequent choice-response tasks with keypress responses. In the object-grasping task, participants were instructed to grasp wooden cubes of variable size either according to a compatible (small-left; large-right) or according to an incompatible (small-right; large-left) mapping. In the choice-response tasks, participants responded with left or right keypresses to the size or color of a small or large stimulus. The results showed that participants with the compatible mapping in the object-grasping task showed a larger SSARC effect in the size discrimination task, but not in the color discrimination task, than participants with the incompatible mapping in the object-grasping task. Results suggest that a short period of practice with different size-location mappings can modulate size-location links used for controlled S-R translation, but not links underlying automatic S-R translation. In general, the results support the hypothesis that grasping habits play a causal role in the formation of spatial-size associations.

本数据集收录Richter, M. 与 Wühr, P.（2024）投稿至《Psychological Research》的论文《不同抓取经验对刺激尺寸与反应位置间映射效应而非对应效应的影响》中的实验原始数据文件。该论文摘要如下：所谓反应编码空间大小关联（spatial-size association of response codes, SSARC）效应，指相较于反向映射条件，个体对物理尺寸较小的刺激采用左侧反应时，反应速度更快、准确率更高；对物理尺寸较大的刺激采用右侧反应时则表现更优。将CORE原则应用于SSARC效应可知，个体惯用手抓取更大/更重物体、非惯用手抓取更小/更轻物体的习惯，会形成空间-大小关联。本研究通过检验前置物体抓取任务的映射关系是否会影响后续按键式选择反应任务中SSARC效应的强度，以探究抓取习惯在空间-大小关联形成过程中是否发挥因果作用。在物体抓取任务中，要求被试按照两种映射规则抓取不同尺寸的木质立方体：一种为相容映射（小立方体→左手抓取；大立方体→右手抓取），另一种为不相容映射（小立方体→右手抓取；大立方体→左手抓取）。在选择反应任务中，被试需根据小/大刺激的尺寸或颜色，执行左侧或右侧按键反应。结果显示，相较于物体抓取任务采用不相容映射的被试，采用相容映射的被试在尺寸辨别任务中表现出更强的SSARC效应，但在颜色辨别任务中未出现该差异。研究结果表明，短时间的不同尺寸-位置映射练习，可调节用于受控刺激-反应（stimulus-response, S-R）转换的尺寸-位置联结，但无法调节支撑自动刺激-反应转换的联结。总体而言，本研究结果支持“抓取习惯在空间-大小关联的形成过程中发挥因果作用”这一假说。