Speed discrimination in 6- and 10-month-old infants follows Weber's law

Möhring, Wenke and Libertus, Melissa E. and Bertin, Evelyn. (2012) Speed discrimination in 6- and 10-month-old infants follows Weber's law. Journal of Experimental Child Psychology, 111 (3). pp. 405-418.

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The speed of a moving object is a critical variable that factors into actions such as crossing a street and catching a ball. However, it is not clear when the ability to discriminate between different speeds develops. Here, we investigated speed discrimination in 6- and 10-month-old infants using a habituation paradigm showing infants events of a ball rolling at different speeds. The 6-month-olds looked longer at novel speeds that differed by a 1:2 ratio than at the familiar ones but showed no difference in looking time to speeds that differed by a 2:3 ratio. In contrast, the 10-month-olds succeeded at discriminating a 2:3 ratio. For both age groups, discrimination was modulated by the ratio between novel and familiar speeds, suggesting that speed discrimination is subject to Weber's law. These findings show striking parallels to previous results in infants' discrimination of duration, size, and number and suggest a shared system for processing different magnitudes.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Society & Choice > Entwicklungs- und Persönlichkeitspsychologie (Grob)
UniBasel Contributors:Möhring, Wenke
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:30 Nov 2017 11:27
Deposited On:30 Nov 2017 11:27

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