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Neonatal Pain Cries: Effect of Circumcision on Acoustic Features and Perceived Urgency

Fran Lang Porter, Richard H. Miller and Richard E. Marshall
Child Development
Vol. 57, No. 3 (Jun., 1986), pp. 790-802
Published by: Wiley on behalf of the Society for Research in Child Development
DOI: 10.2307/1130355
Stable URL: http://www.jstor.org/stable/1130355
Page Count: 13
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Neonatal Pain Cries: Effect of Circumcision on Acoustic Features and Perceived Urgency
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Abstract

The relation between neonatal cry features elicited by painful circumcision procedures and the perceived urgency of those cries was investigated. Vocalizations were recorded during circumcision of 30 normal newborn males, analyzed by spectrographic methods and validated with computer techniques. The most invasive procedures elicited significantly longer crying bouts; shorter quiet intervals; shorter, more frequent vocalizations; higher peak fundamental frequencies; fewer harmonics; and greater variability of the fundamental. Cries elicited by the most intrusive procedures were judged by adult listeners to be the most urgent, and cries from similarly invasive procedures were judged to be of the same degree of urgency. Cries appeared to be judged along 3 dimensions described by harmonic, temporal, and pitch characteristics. Subjective judgments and objective quantitative data converge to demonstrate that infants' cries are perceived as varying and, objectively, do systematically vary with respect to the intensity of painful stimuli.

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