Vowel Space Characteristics of Speech Directed to Children With and Without Hearing Loss

Wieland, Elizabeth A.; Burnham, Evamarie; Kondaurova, Maria V.; Bergeson, Tonya R.; Dilley, Laura C.

doi:10.1044/2015_jslhr-s-13-0250

Cited by 30 publications

(45 citation statements)

References 55 publications

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“…Fourth, infants with CIs displayed IDS preference similar to their hearing experience-matched peers, rather than their chronological age-matched peers. These may be largely related to the nature of the input because caregivers seemed to adjust their speech styles according to the hearing and developmental status of their infants with hearing impairment, rather than the chronological age (Bergeson et al, 2006;Wieland, Burnham, Kondaurova, Bergeson, & Dilley, 2015). For example, the increase in average and minimum pitch from ADS to IDS in mothers' speech to infants with CIs was more similar to that in speech to the control infants with matched hearing experience and distinct from control infants with matched chronological age (Bergeson et al, 2006).…”

Section: Discussionmentioning

confidence: 95%

Infant-Directed Speech Enhances Attention to Speech in Deaf Infants With Cochlear Implants

Wang

Bergeson

Houston

2017

J Speech Lang Hear Res

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Purpose: Both theoretical models of infant language acquisition and empirical studies posit important roles for attention to speech in early language development. However, deaf infants with cochlear implants (CIs) show reduced attention to speech as compared with their peers with normal hearing (NH; Horn, Davis, Pisoni, & Miyamoto, 2005;Houston, Pisoni, Kirk, Ying, & Miyamoto, 2003), which may affect their acquisition of spoken language. The main purpose of this study was to determine (a) whether infantdirected speech (IDS) enhances attention to speech in infants with CIs, as compared with adult-directed speech (ADS), and (b) whether the degree to which infants with CIs pay attention to IDS is associated with later language outcomes. Method: We tested 46 infants-12 prelingually deaf infants who received CIs before 24 months of age and had 12 months of hearing experience (CI group), 22 hearing experience-matched infants with NH (NH-HEM group), and 12 chronological age-matched infants with NH (NH-CAM group)-on their listening preference in 3 randomized blocks: IDS versus silence, ADS versus silence, and IDS versus ADS. We administered the Preschool Language Scale-Fourth Edition (PLS-4; Zimmerman, Steiner, & Pond, 2002) approximately 18 months after implantation to assess receptive and expressive language skills of infants with CIs. Results: In the IDS versus silence block, all 3 groups looked significantly longer to IDS than to silence. In the ADS versus silence block, both the NH-HEM and NH-CAM groups looked significantly longer to ADS relative to silence; however, the CI group did not show any preference. In the IDS versus ADS block, whereas both the CI and NH-HEM groups preferred IDS over ADS, the NH-CAM group looked equally long to IDS and ADS. IDS preference quotient among infants with CIs in the IDS versus ADS block was associated with PLS-4 Auditory Comprehension and PLS-4 Expressive Communication measures. Conclusions: Two major findings emerge: (a) IDS enhances attention to speech in deaf infants with CIs; (b) the degree of IDS preference over ADS relates to language development in infants with CIs. These results support a focus on input in developing intervention strategies to mitigate the effects of hearing loss on language development in infants with hearing loss.

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Section: Discussionmentioning

confidence: 95%

Infant-Directed Speech Enhances Attention to Speech in Deaf Infants With Cochlear Implants

Wang

Bergeson

Houston

2017

J Speech Lang Hear Res

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“…This agrees with previous literature that shows maternal speech to HI infants is affected by infant hearing loss (Chen, 1996;Cheskin, 1981;Cross, JohnsonMorris, & Nienhuys, 1980;Kondaurova & Bergeson, 2011;Kondaurova et al, 2012;Kondaurova, Bergeson, & Kitamura, 2013;Kondaurova, Bergeson, & Xu, 2013;Kondaurova et al, 2015;Kondaurova, Blank, Zheng, Abu Zhaya, & Seidl, 2016;Nienhuys, Cross, & Horsborough, 1984;Wieland, Burnham, Kondaurova, Bergeson, & Dilley, 2015). Previous research has demonstrated that mothers use shorter utterances, exaggerated pitch characteristics, and a slower speaking rate when interacting with their HI infants (Kondaurova, Bergeson, & Xu, 2013).…”

Section: Infant and Mother Vocalizationssupporting

confidence: 82%

Spontaneous vocal matching in mothers and their hearing impaired infants with cochlear implants : a quantitative analysis.

Doggett¹

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Vocal matching, the ability to imitate phonetic properties of speech, was examined in spontaneous interactions of sixteen dyads of mothers and their hearingimpaired (HI) infants with cochlear implants and age-matched normal-hearing (NH) infants. Mother-infant dyads came to three sessions at three, six, and 12 months postimplantation. Vocal matching was defined as an instance of perceptual and acoustic similarity of vowels and consonants between adjacent maternal and infant utterances.Vocal matching occurred in 25% to 50% of infant and in 17% to 64% of mother vocalizations across dyads. Both mothers and infants in the HI group produced fewer matches as compared to the NH group. However, the number of matches increased in both groups over the period of three testing sessions. These results suggest that vocal matching is a part of interactions between mothers and their HI infants and that pediatric hearing loss affects both infants' and mothers' imitative abilities.

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“…However, studies explicitly investigating VHH in IDS across development generally report no differences between ages. This is the case regardless of whether they find overall hyperarticulation in IDS compared to in ADS (Liu et al, 2009;Cristia and Seidl, 2014;Wieland et al, 2015;Hartman et al, 2017;, overall hypoarticulation in IDS compared to in ADS (Englund and Behne, 2006;Benders, 2013) or no difference in VHH between IDS and ADS (Xu Rattanasone et al, 2013;Burnham et al, 2015;Wieland et al, 2015).…”

Section: Vhh In Ids As a Function Of Infant Agementioning

confidence: 92%

“…Hyperarticulated IDS has been reported for ages between 3.1 months (Kuhl et al, 1997) and 63 months (Liu et al, 2009; not within range in Figure 1), and hypoarticulated IDS has been reported for ages between 0.9 months (Englund and Behne, 2006) and 15.3 months (Benders, 2013). Ages for which no difference in VHH between IDS and ADS has been found span 3.0 months to 20.4 months (Dodane and Al-Tamimi, 2007;Kondaurova et al, 2012;Xu Rattanasone et al, 2013;Burnham et al, 2015;Wieland et al, 2015;.…”

Section: Vhh In Ids As a Function Of Infant Agementioning

confidence: 97%

The Dynamics of Vowel Hypo- and Hyperarticulation in Swedish Infant-Directed Speech to 12-Month-Olds

Marklund

Gustavsson

2020

Front. Commun.

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Vowel hypo-and hyperarticulation (VHH) was investigated in Swedish infant-directed speech (IDS) to Swedish 12-month-olds using a measure that normalizes across speakers and vowels: the vhh-index. The vhh-index gives the degree of VHH for each individual vowel token, which allows for analysis of the dynamics of VHH within a conversation. Using both the vhh-index and traditional measures of VHH, the degree of VHH was compared between Swedish IDS and ADS. The vowel space area was larger in IDS than in ADS, and the average vhh-index as well as the modal value was higher in IDS than in ADS. Further, the proportion of vowel tokens that were highly hyperarticulated (vhh-index > 75th percentile) were fewer in ADS than in IDS. Vowels in Swedish IDS to 12-month-olds are thus concluded to be hyperarticulated compared to vowels in Swedish ADS, both in terms of degree and frequency. Findings are in line with previous reports on VHH in Swedish IDS as well as on VHH in IDS to infants around 12 months in other languages. The study considers the importance of robust formant estimation, highlights the need for replication of studies on VHH in IDS on previously studied languages and ages, and discusses the benefits of the vhh-index. Those benefits include that it normalizes across speakers and vowels, can be used for dynamic measures within speech samples, and permits analyses on token-level.

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Vowel Space Characteristics of Speech Directed to Children With and Without Hearing Loss

Cited by 30 publications

References 55 publications

Infant-Directed Speech Enhances Attention to Speech in Deaf Infants With Cochlear Implants

Infant-Directed Speech Enhances Attention to Speech in Deaf Infants With Cochlear Implants

Spontaneous vocal matching in mothers and their hearing impaired infants with cochlear implants : a quantitative analysis.

The Dynamics of Vowel Hypo- and Hyperarticulation in Swedish Infant-Directed Speech to 12-Month-Olds

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