Keus Inge M, Schwarz Wolf
University of Nijmegen, NICI, Nijmegen, The Netherlands.
Mem Cognit. 2005 Jun;33(4):681-95. doi: 10.3758/bf03195335.
Dehaene, Bossini, and Giraux (1993) showed that when participants make parity judgments, responses to numerically small numbers are made faster with the left hand, whereas responses to large numbers are made faster with the right hand (the SNARC [spatial-numerical association of response codes] effect). According to one view, the SNARC effect arises at an early processing stage due to (in)congruencies between the digit's side of presentation and its representation on the mental number line, independently of response effector(s). Alternatively, the SNARC effect might arise at a later response-related stage due to (in)congruencies between the digit's representation on the mental number line and the side of response, independently of the side of presentation. The results of three experiments, using central and lateralized stimuli, and vocal and manual responses, clearly support the view that the SNARC effect arises at a relatively late response-related stage, without substantive contributions from earlier processing stages.
德阿纳、博西尼和吉罗（1993年）表明，当参与者进行奇偶判断时，对较小数字的反应左手更快，而对较大数字的反应右手更快（SNARC效应，即反应编码的空间数字关联效应）。根据一种观点，SNARC效应在早期加工阶段出现，是由于数字呈现的一侧与其在心理数字线上的表征之间的（不）一致性，与反应效应器无关。或者，SNARC效应可能在后期与反应相关的阶段出现，是由于数字在心理数字线上的表征与反应一侧之间的（不）一致性，与呈现一侧无关。三项实验的结果，使用了中央和侧化刺激以及语音和手动反应，明确支持了这样一种观点，即SNARC效应在相对较晚的与反应相关的阶段出现，早期加工阶段没有实质性贡献。
