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1 석정서, "저학력 노인의 개념화를 평가하는 신경심리도구로서의 비율 추론 과제" 서울 대학교 2008
2 정윤경, "비율 추론 능력의 발달:수행에 영향을 미치는 과제 변인을 중심으로" 한국심리학회 산하 한국발달심리학회 18 (18): 109-127, 2005
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4 Dehaene, S., "Three parietal circuits for number processing" 20 (20): 487-506, 2003
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7 Baillargeon, R., "The development of young infants’ intuition about support" 1 : 69-78, 1992
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