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Your Eyes Say “No,” But Your Heart Says “Yes”: Behavioral and Psychophysiological Indices in Infant Quantitative Processing
Brez, Caitlin C. Colombo, John
Brez, Caitlin C.
Colombo, John
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Abstract
Behavioral indices (e.g., infant looking) are predominantly used in studies of infant cognition, but psychophysiological measures have been increasingly integrated into common infant paradigms. The current study reports a result in which behavioral measures and physiological measures were both incorporated in a task designed to study infant number discrimination. Seven-month-old infants were habituated to several sets of stimuli varying in object type, but of a constant numerical value (either 2 or 3 items). Although looking time to each of the test trials revealed no differences, differences in heart-rate defined measures of attention revealed infants’ ability to discriminate number. These findings imply that the inclusion of indices other than behavioral measures should become commonplace in studies of infant cognition.
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This is the peer reviewed version of the following article: Brez, C. C. and Colombo, J. (2012), Your Eyes Say “No,” But Your Heart Says “Yes”: Behavioral and Psychophysiological Indices in Infant Quantitative Processing. Infancy, 17: 445–454. doi:10.1111/j.1532-7078.2011.00094.x, which has been published in final form at http://doi.org/10.1111/j.1532-7078.2011.00094.x. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
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2012
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Wiley
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Brez, C. C. and Colombo, J. (2012), Your Eyes Say “No,” But Your Heart Says “Yes”: Behavioral and Psychophysiological Indices in Infant Quantitative Processing. Infancy, 17: 445–454. doi:10.1111/j.1532-7078.2011.00094.x