Babies show budding number knowledge.Before they start to talk, babies can recognize the difference between two and three entities, a new study suggests. Most 7-month-old infants match the number of faces that they see talking--whether two or three--with the number of voices that they hear, without any training, say Kerry Kerry, county (1991 pop. 121,894), 1,815 sq mi (4,701 sq km), SW Republic of Ireland. The county town is Tralee. Kerry consists of a series of mountainous peninsulas that extend into the Atlantic. E. Jordan and Elizabeth M. Brannon, psychologists This list includes notable psychologists and contributors to psychology, some of whom may not have thought of themselves primarily as psychologists but are included here because of their important contributions to the discipline. at Duke University in Durham, N.C. The researchers studied 20 babies who were held by their mothers in front of two video monitors. One screen showed two women mouthing the word "look" and the other showed three women doing the same. All five women spoke repeatedly for 1 minute. A loudspeaker loudspeaker or speaker, device used to convert electrical energy into sound. It consists essentially of a thin flexible sheet called a diaphragm that is made to vibrate by an electric signal from an amplifier. played either two or three women's voices saying "look" in synchrony synchrony /syn·chro·ny/ (-krah-ne) the occurrence of two events simultaneously or with a fixed time interval between them. atrioventricular (AV) synchrony with one of the video images. Fourteen babies preferred looking at the video in which the number of women matched the number of voices, Jordan and Brannon report in an upcoming Proceedings of the National Academy of Sciences The Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences. . On average, infants looked at matching displays for nearly 22 seconds, compared with 14 seconds for mismatched displays. |
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