Large number discrimination in 6-month-old infants.
Six-month-old infants discriminate between large sets of objects on the basis of numerosity when other extraneous variables are controlled, provided that the sets to be discriminated differ by a large ratio (8 vs. 16 but not 8 vs. 12). The capacities to represent approximate numerosity found in adult animals and humans evidently develop in human infants prior to language and symbolic counting.
Xu
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125 NI, Department of Psychology, Northeastern University, Boston, MA 02155, USA. fxu@neu.edu
Spelke
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D002657:Child Development; D003071:Cognition; D003210:Concept Formation; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008433:Mathematics; D008606:Mental Processes