Caessens Bernie, Hommel Bernhard, Reynvoet Bert, van der Goten Koen
Department of Experimental Psychology, Ghent University, Belgium.
J Gen Psychol. 2004 Oct;131(4):411-25.
In 3 dual-task experiments, the relationship between primary-task response (R1) and secondary-task response (R2) was varied. In general, R1-left responses were faster when followed by the word one, and right responses were faster when followed by the word two. This backward-compatibility (BWC) effect indicated (a) that activation of R2 was not delayed until R1 selection was completed, and (b) that activation of the vocal responses was accompanied by the automatic activation of magnitude codes, known to be associated with spatial left-right codes (spatial-numerical association of response codes [the SNARC effect]). These findings supported the hypotheses (a) that BWC effects persist even with irrelevant R1-R2 overlap, (b) that the SNARC effect is based on associations between magnitude and spatial representations underlying response processing, and (c) that the production and perception of magnitudes relies on common codes.
在3个双任务实验中，改变了主任务反应（R1）与副任务反应（R2）之间的关系。一般来说，当R1为向左反应且后面跟着单词“一”时反应更快，而当R1为向右反应且后面跟着单词“二”时反应更快。这种反向兼容性（BWC）效应表明：（a）R2的激活不会延迟到R1选择完成之后；（b）语音反应的激活伴随着数量编码的自动激活，已知数量编码与空间左右编码相关（反应编码的空间-数字关联[SNARC效应]）。这些发现支持了以下假设：（a）即使R1与R2存在无关重叠，BWC效应依然存在；（b）SNARC效应基于反应处理背后数量与空间表征之间的关联；（c）数量的产生和感知依赖于共同的编码。
