title: Addition goes where the big numbers are: evidence for a reversed operational momentum effect.
abstract: Number processing evokes spatial biases, both when dealing with single digits and in more complex mental calculations. Here we investigated whether these two biases have a common origin, by examining their flexibility. Participants pointed to the locations of arithmetic results on a visually presented line with an inverted, right-to-left number arrangement. We found directionally opposite spatial biases for mental arithmetic and for a parity task administered both before and after the arithmetic task. We discuss implications of this dissociation in our results for the task-dependent cognitive representation of numbers.
authors.affiliation: Department of Behavioral Sciences, Ariel University, Ariel, 40700, Israel, michalpi@ariel.ac.il.
authors.forename: Michal
authors.initials: M
authors.lastname: Pinhas
authors.forename: Samuel
authors.initials: S
authors.lastname: Shaki
authors.forename: Martin H
authors.initials: MH
authors.lastname: Fischer
mesh_terms: D015982:Bias; D003071:Cognition; D005260:Female; D006801:Humans; D008297:Male; D008433:Mathematics; D013028:Space Perception; D055815:Young Adult