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. 2008 Apr;44(4):386-92.
doi: 10.1016/j.cortex.2007.08.004. Epub 2007 Dec 23.

Finger counting habits modulate spatial-numerical associations

Martin H Fischer  1
Affiliations

Finger counting habits modulate spatial-numerical associations

Martin H Fischer. Cortex. 2008 Apr.

Abstract

This study explored the contribution of finger counting habits to the association of numbers with space (the SNARC effect). First, a questionnaire study indicated that two-thirds of 445 adults started counting on their left hand, regardless of their handedness. Secondly, a group of 53 "left-starters" but not a group of 47 "right-starters" showed a SNARC effect in a parity task. A significant difference in the strength of the effect between groups suggests that finger counting habits indeed contribute to the association between numbers and space in adults.

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