The temporal organization underlying durational components of naturally occurring infant cries was examined in 46 1-month-old infants, half of whom had been diagnosed as having colic. In a standard 90-sec crying bout for each infant, the presence or absence of expired cry sound was determined at .05-sec intervals. Binary spectrum analysis of the data detected between 8 and 23 reliable cycles in the expiration of sound in the cries of all infants. The data were characterized by a wide range of individual differences in the frequencies at which these cycles occurred and in other characteristics of the spectra. Although infants with and without colic did not reliably differ in the mean, variability, or range of the durations of expirations or bursts, the two groups were distinguished by their distributions of the total number of peaks in the power spectrum and by the frequencies at which the highest power peak, slowest cycle, and fastest cycle occurred. This study provides the first known systematic examination of the rhythmicities underlying infant crying. / Master of Science
| Identifer | oai:union.ndltd.org:VTETD/oai:vtechworks.lib.vt.edu:10919/41462 |
| Date | 12 March 2009 |
| Creators | Parker-Price, Susan |
| Contributors | Psychology |
| Publisher | Virginia Tech |
| Source Sets | Virginia Tech Theses and Dissertation |
| Language | English |
| Detected Language | English |
| Type | Thesis, Text |
| Format | vii, 46 leaves, BTD, application/pdf, application/pdf |
| Rights | In Copyright, http://rightsstatements.org/vocab/InC/1.0/ |
| Relation | OCLC# 24096939, LD5655.V855_1990.P384.pdf |
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