Lip Movement Exaggerations during Infant-Directed Speech
Purpose: Although a growing body of literature has identified the positive effects of visual speech on speech and language learning, oral movements of infant-directed speech (IDS) have rarely been studied. This investigation used 3-dimensional motion capture technology to describe how mothers modify...
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| Veröffentlicht in: | Journal of speech, language, and hearing research language, and hearing research, 2010-12, Vol.53 (6), p.1529-1542 |
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| creator | Green, Jordan R Nip, Ignatius S. B Wilson, Erin M Mefferd, Antje S Yunusova, Yana |
| description | Purpose: Although a growing body of literature has identified the positive effects of visual speech on speech and language learning, oral movements of infant-directed speech (IDS) have rarely been studied. This investigation used 3-dimensional motion capture technology to describe how mothers modify their lip movements when talking to their infants. Method: Lip movements were recorded from 25 mothers as they spoke to their infants and other adults. Lip shapes were analyzed for differences across speaking conditions. The maximum fundamental frequency, duration, acoustic intensity, and first and second formant frequency of each vowel also were measured. Results: Lip movements were significantly larger during IDS than during adult-directed speech, although the exaggerations were vowel specific. All of the vowels produced during IDS were characterized by an elevated vocal pitch and a slowed speaking rate when compared with vowels produced during adult-directed speech. Conclusion: The pattern of lip-shape exaggerations did not provide support for the hypothesis that mothers produce exemplar visual models of vowels during IDS. Future work is required to determine whether the observed increases in vertical lip aperture engender visual and acoustic enhancements that facilitate the early learning of speech. |
| doi_str_mv | 10.1044/1092-4388(2010/09-0005) |
| format | Article |
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B ; Wilson, Erin M ; Mefferd, Antje S ; Yunusova, Yana</creator><creatorcontrib>Green, Jordan R ; Nip, Ignatius S. B ; Wilson, Erin M ; Mefferd, Antje S ; Yunusova, Yana</creatorcontrib><description>Purpose: Although a growing body of literature has identified the positive effects of visual speech on speech and language learning, oral movements of infant-directed speech (IDS) have rarely been studied. This investigation used 3-dimensional motion capture technology to describe how mothers modify their lip movements when talking to their infants. Method: Lip movements were recorded from 25 mothers as they spoke to their infants and other adults. Lip shapes were analyzed for differences across speaking conditions. The maximum fundamental frequency, duration, acoustic intensity, and first and second formant frequency of each vowel also were measured. Results: Lip movements were significantly larger during IDS than during adult-directed speech, although the exaggerations were vowel specific. All of the vowels produced during IDS were characterized by an elevated vocal pitch and a slowed speaking rate when compared with vowels produced during adult-directed speech. Conclusion: The pattern of lip-shape exaggerations did not provide support for the hypothesis that mothers produce exemplar visual models of vowels during IDS. Future work is required to determine whether the observed increases in vertical lip aperture engender visual and acoustic enhancements that facilitate the early learning of speech.</description><identifier>ISSN: 1092-4388</identifier><identifier>EISSN: 1558-9102</identifier><identifier>DOI: 10.1044/1092-4388(2010/09-0005)</identifier><identifier>PMID: 20699342</identifier><language>eng</language><publisher>United States: American Speech-Language-Hearing Association (ASHA)</publisher><subject>Acoustics ; Adult ; Adults ; Babies ; Biomechanical Phenomena ; Children & youth ; Clinical medicine ; Comparative Analysis ; Cues ; Data collection ; Evaluation Methods ; Face - physiology ; Female ; Humans ; Individual Differences ; Infant ; Infants ; Interpersonal communication in children ; Language Acquisition ; Language Development ; Learning Processes ; Lip - physiology ; Lips ; Listening Comprehension ; Literature Reviews ; Male ; Models, Biological ; Mothers ; Motion ; Motor Development ; Movement - physiology ; Nonverbal Communication ; Oral Language ; Parents ; Phonemes ; Phonetics ; Reading ; Second Language Learning ; Social interaction ; Speech ; Speech - physiology ; Speech Communication ; Speech perception in children ; Studies ; Videotape Recording ; Visual Aids ; Visual Impairments ; Voice Disorders ; Vowels ; Young Adult ; Young Children</subject><ispartof>Journal of speech, language, and hearing research, 2010-12, Vol.53 (6), p.1529-1542</ispartof><rights>COPYRIGHT 2010 American Speech-Language-Hearing Association</rights><rights>Copyright American Speech-Language-Hearing Association Dec 2010</rights><rights>American Speech-Language-Hearing Association</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c629t-aca10bcaa2694a7eccb690af98bbeb352d0774dd6a997da08ba176f6d3eab5563</citedby><cites>FETCH-LOGICAL-c629t-aca10bcaa2694a7eccb690af98bbeb352d0774dd6a997da08ba176f6d3eab5563</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttp://eric.ed.gov/ERICWebPortal/detail?accno=EJ909552$$DView record in ERIC$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20699342$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Green, Jordan R</creatorcontrib><creatorcontrib>Nip, Ignatius S. B</creatorcontrib><creatorcontrib>Wilson, Erin M</creatorcontrib><creatorcontrib>Mefferd, Antje S</creatorcontrib><creatorcontrib>Yunusova, Yana</creatorcontrib><title>Lip Movement Exaggerations during Infant-Directed Speech</title><title>Journal of speech, language, and hearing research</title><addtitle>J Speech Lang Hear Res</addtitle><description>Purpose: Although a growing body of literature has identified the positive effects of visual speech on speech and language learning, oral movements of infant-directed speech (IDS) have rarely been studied. This investigation used 3-dimensional motion capture technology to describe how mothers modify their lip movements when talking to their infants. Method: Lip movements were recorded from 25 mothers as they spoke to their infants and other adults. Lip shapes were analyzed for differences across speaking conditions. The maximum fundamental frequency, duration, acoustic intensity, and first and second formant frequency of each vowel also were measured. Results: Lip movements were significantly larger during IDS than during adult-directed speech, although the exaggerations were vowel specific. All of the vowels produced during IDS were characterized by an elevated vocal pitch and a slowed speaking rate when compared with vowels produced during adult-directed speech. Conclusion: The pattern of lip-shape exaggerations did not provide support for the hypothesis that mothers produce exemplar visual models of vowels during IDS. Future work is required to determine whether the observed increases in vertical lip aperture engender visual and acoustic enhancements that facilitate the early learning of speech.</description><subject>Acoustics</subject><subject>Adult</subject><subject>Adults</subject><subject>Babies</subject><subject>Biomechanical Phenomena</subject><subject>Children & youth</subject><subject>Clinical medicine</subject><subject>Comparative Analysis</subject><subject>Cues</subject><subject>Data collection</subject><subject>Evaluation Methods</subject><subject>Face - physiology</subject><subject>Female</subject><subject>Humans</subject><subject>Individual Differences</subject><subject>Infant</subject><subject>Infants</subject><subject>Interpersonal communication in children</subject><subject>Language Acquisition</subject><subject>Language Development</subject><subject>Learning Processes</subject><subject>Lip - physiology</subject><subject>Lips</subject><subject>Listening Comprehension</subject><subject>Literature Reviews</subject><subject>Male</subject><subject>Models, Biological</subject><subject>Mothers</subject><subject>Motion</subject><subject>Motor Development</subject><subject>Movement - physiology</subject><subject>Nonverbal Communication</subject><subject>Oral Language</subject><subject>Parents</subject><subject>Phonemes</subject><subject>Phonetics</subject><subject>Reading</subject><subject>Second Language Learning</subject><subject>Social interaction</subject><subject>Speech</subject><subject>Speech - physiology</subject><subject>Speech Communication</subject><subject>Speech perception in children</subject><subject>Studies</subject><subject>Videotape Recording</subject><subject>Visual Aids</subject><subject>Visual Impairments</subject><subject>Voice Disorders</subject><subject>Vowels</subject><subject>Young Adult</subject><subject>Young Children</subject><issn>1092-4388</issn><issn>1558-9102</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkk9v1DAQxSMEoqXwDRBEIPHnkHbs2I59QarKAkWLOABny3EmWVdZe3GSCr49Dtuuumgl5IMtz-89jWZelj0ncEqAsTMCihaslPINBQJnoAoA4G_vZceEc1koAvR-et9SR9mjYbhKCBAmHmZHFIRSJaPHmVy6Tf4lXOMa_Zgvfpmuw2hGF_yQN1N0vssvfWv8WLx3Ee2ITf5tg2hXj7MHrekHfHJzn2Q_Piy-X3wqll8_Xl6cLwsrqBoLYw2B2hpDhWKmQmtrocC0StY11iWnDVQVaxphlKoaA7I2pBKtaEo0NeeiPMnebX03U73GxqY2o-n1Jrq1ib91ME7vV7xb6S5c65Izydhs8PrGIIafEw6jXrvBYt8bj2EatORUKkFB_Z8kopScAUnki3_IqzBFn-agJVOCUVJBgl5uoc70qJ1vQ-rPzpb6nDLJK8nKmSoOUB36tIY-eGxd-t7jTw_w6TS4dvag4NUdwQpNP66G0E9_d7wPii1oYxiGiO1uyAT0nDo950nPedJz6jQoPacuCZ_dXdFOdpuyBDzdAhid3ZUXnxUozmn5B5ZN2Qw</recordid><startdate>20101201</startdate><enddate>20101201</enddate><creator>Green, Jordan R</creator><creator>Nip, Ignatius S. 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B</au><au>Wilson, Erin M</au><au>Mefferd, Antje S</au><au>Yunusova, Yana</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><ericid>EJ909552</ericid><atitle>Lip Movement Exaggerations during Infant-Directed Speech</atitle><jtitle>Journal of speech, language, and hearing research</jtitle><addtitle>J Speech Lang Hear Res</addtitle><date>2010-12-01</date><risdate>2010</risdate><volume>53</volume><issue>6</issue><spage>1529</spage><epage>1542</epage><pages>1529-1542</pages><issn>1092-4388</issn><eissn>1558-9102</eissn><abstract>Purpose: Although a growing body of literature has identified the positive effects of visual speech on speech and language learning, oral movements of infant-directed speech (IDS) have rarely been studied. This investigation used 3-dimensional motion capture technology to describe how mothers modify their lip movements when talking to their infants. Method: Lip movements were recorded from 25 mothers as they spoke to their infants and other adults. Lip shapes were analyzed for differences across speaking conditions. The maximum fundamental frequency, duration, acoustic intensity, and first and second formant frequency of each vowel also were measured. Results: Lip movements were significantly larger during IDS than during adult-directed speech, although the exaggerations were vowel specific. All of the vowels produced during IDS were characterized by an elevated vocal pitch and a slowed speaking rate when compared with vowels produced during adult-directed speech. Conclusion: The pattern of lip-shape exaggerations did not provide support for the hypothesis that mothers produce exemplar visual models of vowels during IDS. Future work is required to determine whether the observed increases in vertical lip aperture engender visual and acoustic enhancements that facilitate the early learning of speech.</abstract><cop>United States</cop><pub>American Speech-Language-Hearing Association (ASHA)</pub><pmid>20699342</pmid><doi>10.1044/1092-4388(2010/09-0005)</doi><tpages>14</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of speech, language, and hearing research, 2010-12, Vol.53 (6), p.1529-1542 |
| issn | 1092-4388 1558-9102 |
| language | eng |
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| source | MEDLINE; Education Source |
| subjects | Acoustics Adult Adults Babies Biomechanical Phenomena Children & youth Clinical medicine Comparative Analysis Cues Data collection Evaluation Methods Face - physiology Female Humans Individual Differences Infant Infants Interpersonal communication in children Language Acquisition Language Development Learning Processes Lip - physiology Lips Listening Comprehension Literature Reviews Male Models, Biological Mothers Motion Motor Development Movement - physiology Nonverbal Communication Oral Language Parents Phonemes Phonetics Reading Second Language Learning Social interaction Speech Speech - physiology Speech Communication Speech perception in children Studies Videotape Recording Visual Aids Visual Impairments Voice Disorders Vowels Young Adult Young Children |
| title | Lip Movement Exaggerations during Infant-Directed Speech |
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