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Two-digit Comparison
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Abstract. We investigate whether two-digit numbers are decomposed for purposes of numerical comparison (e.g., choosing the larger one). Earlier theorists concluded that numbers are processed holistically ( Brysbaert, 1995 ; Dehaene, Dupoux, & Mehler, 1990 ), or that holistic and decomposed processes operate in parallel ( Nuerk, Weger, & Willmes, 2001 ). In the present experiment, we presented pairs of two-digit numbers with a decade distance of either zero (e.g., 54-57) or one (54-61). If a holistic process contributes to two-digit comparison, there should be an overall distance effect for number pairs with a decade distance of one. On the other hand, if numbers are decomposed and a holistic comparison does not contribute, this overall distance effect should be absent for these number pairs. Evidence is found that, at least in the present task settings, numbers are not compared holistically. The results are interpreted in terms of a recently proposed theory of numerical cognition ( Verguts & Fias, 2004 ; Verguts, Fias, & Stevens, 2005) .
Title: Two-digit Comparison
Description:
Abstract.
We investigate whether two-digit numbers are decomposed for purposes of numerical comparison (e.
g.
, choosing the larger one).
Earlier theorists concluded that numbers are processed holistically ( Brysbaert, 1995 ; Dehaene, Dupoux, & Mehler, 1990 ), or that holistic and decomposed processes operate in parallel ( Nuerk, Weger, & Willmes, 2001 ).
In the present experiment, we presented pairs of two-digit numbers with a decade distance of either zero (e.
g.
, 54-57) or one (54-61).
If a holistic process contributes to two-digit comparison, there should be an overall distance effect for number pairs with a decade distance of one.
On the other hand, if numbers are decomposed and a holistic comparison does not contribute, this overall distance effect should be absent for these number pairs.
Evidence is found that, at least in the present task settings, numbers are not compared holistically.
The results are interpreted in terms of a recently proposed theory of numerical cognition ( Verguts & Fias, 2004 ; Verguts, Fias, & Stevens, 2005) .
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