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Direct linkMcCrink, Koleen; Wynn, Karen – Journal of Experimental Child Psychology, 2009
Recent studies on nonsymbolic arithmetic have illustrated that under conditions that prevent exact calculation, adults display a systematic tendency to overestimate the answers to addition problems and underestimate the answers to subtraction problems. It has been suggested that this "operational momentum" results from exposure to a…
Descriptors: Numbers, Infants, Developmental Continuity, Subtraction
