Behavioral and Brain Sciences

Open Peer Commentary

Set representations required for the acquisition of the “natural number” concept

Justin Halberdaa1 and Lisa Feigensona1

a1 Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD 21218 Halberda@jhu.edu http://www.psy.jhu.edu/~halberda/ Feigenson@jhu.edu http://www.psy.jhu.edu/~feigenson/

Abstract

Rips et al. consider whether representations of individual objects or analog magnitudes are building blocks for the concept natural number. We argue for a third core capacity – the ability to bind representations of individuals into sets. However, even with this addition to the list of starting materials, we agree that a significant acquisition story is needed to capture natural number.

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