ERIC Number: EJ922086
Record Type: Journal
Publication Date: 2006-Nov
Abstractor: As Provided
Reference Count: 0
A Common Representational System Governed by Weber's Law: Nonverbal Numerical Similarity Judgments in 6-Year-Olds and Rhesus Macaques
Jordan, Kerry E.; Brannon, Elizabeth M.
Journal of Experimental Child Psychology, v95 n3 p215-229 Nov 2006
This study compared nonverbal numerical processing in 6-year-olds with that in nonhuman animals using a numerical bisection task. In the study, 16 children were trained on a delayed match-to-sample paradigm to match exemplars of two anchor numerosities. Children were then required to indicate whether a sample intermediate to the anchor values was closer to the small anchor value or the large anchor value. For two sets of anchor values with the same ratio, the probability of choosing the larger anchor value increased systematically with sample number, and the psychometric functions superimposed when plotted on a logarithmic scale. The psychometric functions produced by the children also superimposed with the psychometric functions produced by rhesus monkeys in an analogous previous experiment. These examples of superimposition demonstrate that nonverbal number representations, even in children who have acquired the verbal counting system, are modulated by Weber's law.
Descriptors: Psychometrics, Probability, Young Children, Numbers, Animals, Models, Sample Size, Values, Primatology, Experiments, Computation
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A