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dc.contributor.authorMcIlreavy, Megan E.en_US
dc.date.accessioned2011-08-06T14:38:28Z
dc.date.available2011-08-06T14:38:28Z
dc.date.issued2003-05-09en_US
dc.identifier.otheretd-10052003-114339en_US
dc.identifier.urihttp://hdl.handle.net/10919/9598
dc.description.abstractInfants of various ages across the first postnatal year have shown behavioral preferences (i.e., more attention) to visual displays when looking resulted in the presentation of Infant-Directed Speech (IDS) compared to Adult-Directed Speech (ADS). Although IDS differs from ADS on a variety of measures, most research has focused on various pitch characteristics (i.e., IDS is higher in absolute pitch and more variable in pitch across utterance length). Work from our lab has found that when the pitch characteristics of IDS were held constant, but the temporal features were manipulated, younger (but not older) infants attended more to slower rates of IDS, even though it was unlikely that they had heard such speech (when speech is spoken at this slow rate, the fundamental frequency cannot be maintained). The purpose of this study was to expand our investigation of how speaking rate affects infant attention by adding the physiological measure of heart rate to our protocol. Of specific interest was whether infants would show differential amounts of heart-rate (HR) decelerations as a function of rate (i.e. greater decelerations to slowed speech). 4-month-old infants were tested with normal IDS (unaltered rate) and slow IDS (rate was twice as slow as normal). Behaviorally, infants did not differentially attend to a display as a function of speech type. Psychophysiologically, infants showed more pronounced HR decelerations to slow than to normal IDS. The discrepancy between measures of attention is discussed, especially with regard to the organization of attention in infants of this age.en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartMEMETD.PDFen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectSpeaking Rateen_US
dc.subjectInfant Attentionen_US
dc.subjectArousalen_US
dc.subjectInfant-Directed Speechen_US
dc.titleBehavioral and Psychophysiological Responses of 4-month-old Infants to Differing Rates of Infant Directed Speechen_US
dc.typeThesisen_US
dc.contributor.departmentPsychologyen_US
dc.description.degreeMSen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
dc.contributor.committeechairCooper, Robin K. Pannetonen_US
dc.contributor.committeememberFriedman, Bruce H.en_US
dc.contributor.committeememberBell, Martha Annen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10052003-114339en_US
dc.date.sdate2003-10-05en_US
dc.date.rdate2004-10-09
dc.date.adate2003-10-09en_US


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