title: The equality of quantity.
abstract: Do disparate dimensions of magnitude share an underlying mental representation? Two recent papers offer suggestive evidence that participants' discrimination thresholds are identical across domains. Brannon, Lutz and Cordes showed that six-month-old infants' area discriminations match their number discriminations. VanMarle and Wynn demonstrated the same pattern for six-month-olds' discrimination of temporal duration. These parallels across infants' responses to number, area and time raise questions about the fundamental nature of quantity processing.
authors.affiliation: Department of Psychological and Brain Sciences, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA. feigenson@jhu.edu
authors.forename: Lisa
authors.initials: L
authors.lastname: Feigenson
mesh_terms: D004192:Discrimination, Psychological; D006801:Humans; D007223:Infant; D008433:Mathematics; D013998:Time Perception