Pinhas Michal, Fischer Martin H
University of Dundee, Scotland, UK.
Cognition. 2008 Dec;109(3):408-15. doi: 10.1016/j.cognition.2008.09.003. Epub 2008 Oct 31.
McCrink (McCrink, Dehaene, & Dehaene-Lambertz (2007). Moving along the number line: Operational momentum in nonsymbolic arithmetic. Perception and Psychophysics, 69(8), 1324-1333) documented an "Operational Momentum" (OM) effect - overestimation of addition and underestimation of subtraction outcomes in non-symbolic (dot pattern) arithmetic. We investigated whether OM also occurs with Arabic number symbols. Participants pointed to number locations (1-9) on a visually given number line after computing them from addition or subtraction problems. Pointing was biased leftward after subtracting and rightward after adding, especially when the second operand was zero. The findings generalize OM to the spatial domain and to symbolic number processing. Alternative interpretations of our results are discussed.
麦克林克（麦克林克、德阿纳和德阿纳-兰贝茨，2007年。在数轴上移动：非符号算术运算中的操作动量。《知觉与心理物理学》，69(8)，1324 - 1333）记录了一种“操作动量”（OM）效应——在非符号（点阵模式）算术中加法结果被高估，减法结果被低估。我们研究了操作动量是否也出现在阿拉伯数字符号运算中。参与者在根据加法或减法问题计算出数字后，在视觉呈现的数轴上指出数字位置（1 - 9）。减法运算后指向偏左，加法运算后指向偏右，尤其是当第二个操作数为零时。这些发现将操作动量推广到了空间领域和符号数字处理中。我们还讨论了对结果的其他解释。
