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A syllable in signed languages. Identical language structure in signed and spoken languages provides clues to the biological foundations of language. A syllable similar to the one represented here was observed in deaf infants´ manual babbling. Similarities between manual babbling in deaf infants and vocal babbling in hearing infants reveal that babbling is determined by an amodal, brain-based language capacity. See page 1493. [Photograph by Robert Lamarche]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)