Proctor Robert W, Vu Kim-Phuong L
Department of Psychological Sciences, Purdue University, 703 Third Street, W. Lafayette, IN 47907-2081, USA.
Atten Percept Psychophys. 2009 Nov;71(8):1771-81. doi: 10.3758/APP.71.8.1771.
Performance of pairs of three-choice tasks shows a consistency benefit for which reaction times are shorter when the stimulus-response mappings for each task are consistent (both corresponding or both mirrored) than when they are inconsistent. In the present study, we examined whether this consistency benefit is reduced at long stimulus onset asynchronies, as it is for pairs of two-choice tasks, or is relatively unaffected, as it is for pairs of four-choice tasks. The consistency benefit was evident for both corresponding and mirrored mappings, at all intervals. For consistent mirrored mappings, the benefit was found for the side stimulus positions (for which responses are crossed) but not for the center position, whereas for consistent corresponding mappings, a benefit was evident for the center position as well. The results for both mappings are in agreement with an emergent mapping-choice account. The consistent corresponding mapping also benefits from subjects' ability to apply a respond-corresponding rule across tasks. An emergent perceptual-feature process that contributes to the consistency benefit for two-choice tasks does not seem to play a role in tasks with three or more choices.
成对的三选一任务表现出一种一致性优势，即当每个任务的刺激-反应映射一致时（两者对应或两者镜像），反应时间比不一致时更短。在本研究中，我们探究了这种一致性优势在长时间刺激起始异步情况下是否像二选一任务对那样降低，或者像四选一任务对那样相对不受影响。对于对应和镜像映射，在所有时间间隔下一致性优势都很明显。对于一致的镜像映射，在侧面刺激位置（反应交叉的位置）发现了优势，但在中心位置没有，而对于一致的对应映射，中心位置也明显存在优势。两种映射的结果都与一种新兴的映射选择解释一致。一致的对应映射还受益于受试者在不同任务中应用反应对应规则的能力。一个有助于二选一任务一致性优势的新兴感知特征过程似乎在三选一或更多选择的任务中不起作用。
