Creekmur Beth, Vu Kim-Phuong L
Department of Psychology, California State University Long Beach, Long Beach, CA 90840, USA.
Am J Psychol. 2012 Fall;125(3):335-49. doi: 10.5406/amerjpsyc.125.3.0335.
A stimulus-response compatibility (SRC) effect is obtained when performance is better with compatible mappings than with incompatible mappings. When mappings are mixed within a task, the SRC effect is often eliminated or reversed.The present study examines how 1,600 trials with different practice tasks can affect the response selection process in these mixed mapping environments. Participants were assigned to one of three practice groups: mixed mapping, pure compatible mapping, and pure incompatible mapping. Subsequently, all participants performed an experimental session in which compatible and incompatible trials were mixed.The SRC effect was eliminated in the experimental mixed mapping session, regardless of practice condition. The results suggest that practice does not change the need to suppress the direct response selection route in a mixed mapping task. However, reaction time distributions and sequential analyses were modulated by practice condition, which indicates that the new associations acquired during practice may activate new routes that interact with preexisting ones.
当使用兼容映射时的表现优于不兼容映射时，就会获得刺激-反应兼容性（SRC）效应。当在一项任务中映射混合出现时，SRC效应通常会消除或反转。本研究考察了1600次不同练习任务的试验如何影响这些混合映射环境中的反应选择过程。参与者被分配到三个练习组之一：混合映射组、纯兼容映射组和纯不兼容映射组。随后，所有参与者都进行了一个实验环节，其中兼容和不兼容的试验混合出现。无论练习条件如何，在实验性混合映射环节中SRC效应都被消除了。结果表明，练习并不会改变在混合映射任务中抑制直接反应选择路径的需求。然而，反应时间分布和序列分析受到练习条件的调节，这表明练习过程中获得的新关联可能会激活与既有路径相互作用的新路径。
