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. 2002 Oct;30(7):1160-7.
doi: 10.3758/bf03194333.

Decomposing the problem-size effect: a comparison of response time distributions across cultures

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Decomposing the problem-size effect: a comparison of response time distributions across cultures

Marcie Penner-Wilger et al. Mem Cognit. 2002 Oct.

Abstract

Is the locus of the problem-size effect in mental arithmetic different across cultures? In a novel approach to this question, the ex-Gaussian distributional model was applied to response times for large (e.g., 8 x 9) and small (e.g., 2 x 3) problems obtained from Chinese and Canadian graduate students in a multiplication production task (LeFevre & Liu, 1997). The problem-size effect for the Chinese group occurred in mu (the mean of the normal component), whereas the problem-size effect for the Canadian group occurred in both mu and tau (the mean of the exponential component). The results support the position that the problem-size effect for the Chinese group is purely a memory-retrieval effect, whereas for the Canadian group, it is an effect of both retrieval and the use of nonretrieval solution procedures.

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