Tape recorded cries of 21 infants with Down's syndrome were analyzed for audible characteristics such as bursts, whimpers, gasps, etc. These cries were compared with comparable data from 21 normal infants matched for age and sex. Nearly all of the characteristics measured showed significant differences in the predicted direction. The cry of the normal infant is more active, lasts longer, and contains a greater total number of sounds than that of the mongoloid infant.
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