Academic literature on the topic 'Early infant vocalizations'
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Journal articles on the topic "Early infant vocalizations"
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Gregory, Adele, Marija Tabain, and Michael Robb. "Duration and Voice Quality of Early Infant Vocalizations." Journal of Speech, Language, and Hearing Research 61, no. 7 (July 13, 2018): 1591–602. http://dx.doi.org/10.1044/2018_jslhr-s-17-0316.
Full textAbstract:
Purpose Infant vocal durations have been studied from a variety of perspectives, including medical, social, and linguistic. The resultant developmental profile across the first 6 months of life, however, is still far from clear. The purpose of this study was to evaluate the durational properties of infant vocalizations from the unique perspective of voice quality. By considering an infant's modal and nonmodal voice qualities, the developmental range of vocalizations produced by infants during the early months of life was captured. Method Four Australian English–speaking infants were recorded for approximately 1 hr per week during the first 6 months of life. A total of 6,309 vocalizations were perceptually identified and labeled according to voice quality. The duration of each vocalization was subsequently measured. Results A nonlinear curve was evident for the duration of all vocalizations combined. Duration increased significantly between Months 3 and 5. Modal voice was the only voice quality that displayed a linear increase in duration across the study. All other voice qualities displayed polynomial trends. Conclusions Based on the current results, the inconsistent pattern of vocal duration development found previously can be reconciled when voice quality properties of vocalizations are taken into account. A nonlinear curve is evident when a broad corpus of infant vocalizations is used, whereas a narrow corpus containing predominantly modal vocalizations displays a linear trend. The results demonstrate the necessity of including nonmodal voice qualities in infant duration experiments so as to not overstate the linear nature of duration increases.
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Seidl, Amanda, Alejandrina Cristia, Melanie Soderstrom, Eon-Suk Ko, Emily A. Abel, Ashleigh Kellerman, and A. J. Schwichtenberg. "Infant–Mother Acoustic–Prosodic Alignment and Developmental Risk." Journal of Speech, Language, and Hearing Research 61, no. 6 (June 19, 2018): 1369–80. http://dx.doi.org/10.1044/2018_jslhr-s-17-0287.
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Purpose One promising early marker for autism and other communicative and language disorders is early infant speech production. Here we used daylong recordings of high- and low-risk infant–mother dyads to examine whether acoustic–prosodic alignment as well as two automated measures of infant vocalization are related to developmental risk status indexed via familial risk and developmental progress at 36 months of age. Method Automated analyses of the acoustics of daylong real-world interactions were used to examine whether pitch characteristics of one vocalization by the mother or the child predicted those of the vocalization response by the other speaker and whether other features of infants' speech in daylong recordings were associated with developmental risk status or outcomes. Results Low-risk and high-risk dyads did not differ in the level of acoustic–prosodic alignment, which was overall not significant. Further analyses revealed that acoustic–prosodic alignment did not predict infants' later developmental progress, which was, however, associated with two automated measures of infant vocalizations (daily vocalizations and conversational turns). Conclusions Although further research is needed, these findings suggest that automated measures of vocalizations drawn from daylong recordings are a possible early identification tool for later developmental progress/concerns. Supplemental Material https://osf.io/cdn3v/
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DeVeney, Shari L., Anastasia Kyvelidou, and Paris Mather. "A home-based longitudinal study of vocalization behaviors across infants at low and elevated risk of autism." Autism & Developmental Language Impairments 6 (January 2021): 239694152110576. http://dx.doi.org/10.1177/23969415211057658.
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Background and Aims: The purpose of this exploratory study was to expand existing literature on prelinguistic vocalizations by reporting results of the first home-based longitudinal study examining a wide variety of behaviors and characteristics, including early vocalizations, across infants at low and elevated risk of autism spectrum disorder (ASD). The study of vocalizations and vocalization changes across early developmental periods shows promise in reflecting early clinically significant differences across infants at low and elevated risk of ASD. Observations of early vocalizations and their differences during infancy could provide a reliable and essential component of an early developmental profile that would lower the average diagnostic age for ASD. However, studies employing observation of vocalization behaviors have been limited and often conducted in laboratory settings, reducing the external generalization of the findings. Methods: The present study was conducted to determine the consistency of previous findings with longitudinal data collected in home environments. Infants in the present study represented elevated risk from two etiological backgrounds, (a) infants born prematurely and with low birth weight and (b) infants who had an older sibling diagnosed with ASD. All data were collected in the infants’ homes and compared with data collected from infants with low likelihood of ASD. The study included 44 participants (31 in the low-risk sample, 13 in the high-risk sample) with vocalization behaviors observed at 6- and 12-months through 20-min semi-structured play interactions with caregivers. Observations were video-recorded and later coded for speech and non-speech vocalizations. Results: Differences in the 6-month vocalization behaviors were not statistically significant across risk levels of ASD. By 12 months; however, risk group differences were evident in the total number of vocalizations overall with specific differences across groups representing moderate to large, clinically relevant effects. Infants at low risk of ASD demonstrated significantly greater developmental change between 6- and 12-months than did the infants at high risk. Data were also reviewed for differences across high-risk group etiologies. Conclusions: The present study was unique and innovative in a number of ways as the first home-based longitudinal study examining infant vocal behaviors across low and high risk of ASD. Many of the present study findings were consistent with previous cross-sectional investigations of infants at elevated risk for ASD, indicating support for further home-based longitudinal study in this area. Findings also indicated some preliminary subgroup differences between high-risk etiologies of ASD. Vocalization differences across high risk groups had not been previously addressed in the literature. Implications: Vocalization differences are notable by 12-months of age between infants at low and elevated risk of ASD and infants at high risk demonstrated reduced developmental changes between 6- and 12-months compared to the infants at low risk. Observation of early infant vocalization behaviors may reasonably occur in the home, providing early childhood professionals and researchers with empirical support for data collection of child-caregiver interactions in this setting. Potential differences across high-risk etiologies warrant further investigation.
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Yoo, Hyunjoo, and Seunghee Ha. "Infant Vocalizations and Early Home Language Environment." Communication Sciences & Disorders 26, no. 2 (June 30, 2021): 263–73. http://dx.doi.org/10.12963/csd.21806.
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Objectives: It is well known that infant-directed speech (IDS) facilitates early language acquisition. There is also growing evidence that adult-directed (ADS) or overheard speech may influence language learning. Given the importance of early language environment in infancy, greater attention must be paid to systematically investigating home language environment as well as relations between language input and infant volubility. The goals of this study were (1) to investigate the amount of IDS and ADS in a naturalistic environment, (2) to examine infant volubility across differing circumstances, and (3) to explore relations between caregiver volubility and infant volubility.Methods: Sixteen caregiver-infant dyads living in Korea participated in the study. Caregiver and infant vocalizations were recorded using all-day LENA (Language ENvironment Analysis) recorders in their homes as part of a longitudinal study. We quantified the number of infant speech-like vocalizations (i.e., protophones). We also estimated the amount of caregiver volubility. Generalized Estimating Equations (GEE) were conducted to address the research questions.Results: Results indicated that caregivers did not constantly talk to their infants. There was a significant difference in infant volubility between the IDS and No IDS circumstances. However, no significant difference was found between the ADS and No ADS circumstances. Infant volubility was found to be highest when caregiver volubility ranged in the middle.Conclusion: This study may support a midrange hypothesis which suggests that midrange interaction is optimal for infant development outcomes.
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Bourvis, Nadège, Magi Singer, Catherine Saint Georges, Nicolas Bodeau, Mohamed Chetouani, David Cohen, and Ruth Feldman. "Pre-linguistic infants employ complex communicative loops to engage mothers in social exchanges and repair interaction ruptures." Royal Society Open Science 5, no. 1 (January 2018): 170274. http://dx.doi.org/10.1098/rsos.170274.
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Language has long been identified as a powerful communicative tool among humans. Yet, pre-linguistic communication, which is common in many species, is also used by human infants prior to the acquisition of language. The potential communicational value of pre-linguistic vocal interactions between human infants and mothers has been studied in the past decades. With 120 dyads (mothers and three- or six-month-old infants), we used the classical Still Face Paradigm (SFP) in which mothers interact freely with their infants, then refrain from communication (Still Face, SF), and finally resume play. We employed innovative automated techniques to measure infant and maternal vocalization and pause, and dyadic parameters (infant response to mother, joint silence and overlap) and the emotional component of Infant Directed Speech (e-IDS) throughout the interaction. We showed that: (i) during the initial free play mothers use longer vocalizations and more e-IDS when they interact with older infants and (ii) infant boys exhibit longer vocalizations and shorter pauses than girls. (iii) During the SF and reunion phases, infants show marked and sustained changes in vocalizations but their mothers do not and (iv) mother–infant dyadic parameters increase in the reunion phase. Our quantitative results show that infants, from the age of three months, actively participate to restore the interactive loop after communicative ruptures long before vocalizations show clear linguistic meaning. Thus, auditory signals provide from early in life a channel by which infants co-create interactions, enhancing the mother–infant bond.
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Lopez, Lukas D., Eric A. Walle, Gina M. Pretzer, and Anne S. Warlaumont. "Adult responses to infant prelinguistic vocalizations are associated with infant vocabulary: A home observation study." PLOS ONE 15, no. 11 (November 25, 2020): e0242232. http://dx.doi.org/10.1371/journal.pone.0242232.
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This study used LENA recording devices to capture infants’ home language environments and examine how qualitative differences in adult responding to infant vocalizations related to infant vocabulary. Infant-directed speech and infant vocalizations were coded in samples taken from daylong home audio recordings of 13-month-old infants. Infant speech-related vocalizations were identified and coded as either canonical or non-canonical. Infant-directed adult speech was identified and classified into different pragmatic types. Multiple regressions examined the relation between adult responsiveness, imitating, recasting, and expanding and infant canonical and non-canonical vocalizations with caregiver-reported infant receptive and productive vocabulary. An interaction between adult like-sound responding (i.e., the total number of imitations, recasts, and expansions) and infant canonical vocalizations indicated that infants who produced more canonical vocalizations and received more adult like-sound responses had higher productive vocabularies. When sequences were analyzed, infant canonical vocalizations that preceded and followed adult recasts and expansions were positively associated with infant productive vocabulary. These findings provide insights into how infant-adult vocal exchanges are related to early vocabulary development.
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Shimada, Yohko M. "Infant vocalization when alone: Possibility of early sound playing." International Journal of Behavioral Development 36, no. 6 (June 29, 2012): 407–12. http://dx.doi.org/10.1177/0165025411431408.
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Five-month-old infants' vocalization when alone was investigated. Several researchers have reported observing that young infants vocalize in comfortable states without any response from others. As is implied by episodic reports in previous studies, it is possible that infants vocalize to play with their own vocal sound. Producing and listening to their vocalizations as sound play could be an early emergence of musical behavior. A hypothesis of this study is that infants vocalize when alone in a comfortable condition for the purpose of listening to their sound, and not to elicit responses from others. Three experimental conditions were conducted in the infants' homes: the response condition, where the mother responded to the infant; the no-response condition, where the infant was left alone in the room and began spontaneous sound production; and the no-response-amplified condition, where the second condition was accompanied by amplified immediate sound feedback. The results suggested that the ratio of sound was higher in the no-response condition, and even higher in the no-response-amplified condition. In both conditions where the infants were alone, repetition of the same phrase was increased. The possible implications of infant vocalization simply to listen to their sounds are discussed.
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Ramsdell-Hudock, Heather L., Anne S. Warlaumont, Lindsey E. Foss, and Candice Perry. "Classification of Infant Vocalizations by Untrained Listeners." Journal of Speech, Language, and Hearing Research 62, no. 9 (September 20, 2019): 3265–75. http://dx.doi.org/10.1044/2019_jslhr-s-18-0494.
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Purpose To better enable communication among researchers, clinicians, and caregivers, we aimed to assess how untrained listeners classify early infant vocalization types in comparison to terms currently used by researchers and clinicians. Method Listeners were caregivers with no prior formal education in speech and language development. A 1st group of listeners reported on clinician/researcher-classified vowel, squeal, growl, raspberry, whisper, laugh, and cry vocalizations obtained from archived video/audio recordings of 10 infants from 4 through 12 months of age. A list of commonly used terms was generated based on listener responses and the standard research terminology. A 2nd group of listeners was presented with the same vocalizations and asked to select terms from the list that they thought best described the sounds. Results Classifications of the vocalizations by listeners largely overlapped with published categorical descriptors and yielded additional insight into alternate terms commonly used. The biggest discrepancies were found for the vowel category. Conclusion Prior research has shown that caregivers are accurate in identifying canonical babbling, a major prelinguistic vocalization milestone occurring at about 6–7 months of age. This indicates that caregivers are also well attuned to even earlier emerging vocalization types. This supports the value of continuing basic and clinical research on the vocal types infants produce in the 1st months of life and on their potential diagnostic utility, and may also help improve communication between speech-language pathologists and families.
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CHEN, LI-MEI, and RAYMOND D. KENT. "Segmental production in Mandarin-learning infants." Journal of Child Language 37, no. 2 (June 3, 2009): 341–71. http://dx.doi.org/10.1017/s0305000909009581.
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ABSTRACTThe early development of vocalic and consonantal production in Mandarin-learning infants was studied at the transition from babbling to producing first words. Spontaneous vocalizations were recorded for 24 infants grouped by age: G1 (0 ; 7 to 1 ; 0) and G2 (1 ; 1 to 1 ; 6). Additionally, the infant-directed speech of 24 caregivers was recorded during natural infant–adult interactions to infer language-specific effects. Data were phonetically transcribed according to broad categories of vowels and consonants. Vocalic development, in comparison with reports for children of other linguistic environments, exhibited two universal patterns: the prominence of [ɛ] and [ə], and the predominance of low and mid vowels over high vowels. Language-specific patterns were also found, e.g. the early appearance and acquisition of low vowels [ɑ]. Vowel production was similar in G1 and G2, and a continuum of developmental changes brought infants' vocalization closer to the adult model. Consonantal development showed two universal patterns: labials and alveolars occurred more frequently than velars; and nasals developed earlier than fricatives, affricates and liquids. We also found two language-specific patterns: alveolars were more prominent than labials and affricates developed early. Universal and language-specific characteristics in G1 continued to be prominent in G2. These data indicate that infants are sensitive to the ambient language at an early age, and this sensitivity influences the nature of their vocalizations.
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Hsu, H., A. Fogel, R. B. Cooper, E. E. Nwokah, and D. S. Messinger. "The development of infant positive vocalizations in early infancy." Infant Behavior and Development 19 (April 1996): 518. http://dx.doi.org/10.1016/s0163-6383(96)90572-x.
Full textDissertations / Theses on the topic "Early infant vocalizations"
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(5930804), Lisa M. Rague. "Acoustic Properties of Early Vocalizations in Infants With Fragile X Syndrome." Thesis, 2019.
Find full textAbstract:
Fragile X syndrome (FXS) is a neurogenetic syndrome characterized by cognitive impairments and high rates of autism spectrum disorder (ASD). FXS is often used as a model for exploring mechanisms and pathways of symptom expression in ASD due to the high prevalence of ASD in this population and the known single-gene cause for ASD in FXS. Early vocalization features – including volubility, canonical complexity, vocalization duration and vocalization pitch – have shown promise in detecting ASD in idiopathic ASD populations but have yet to be extensively studied in a population with a known cause for ASD, such as FXS. The present study characterizes early vocalization features in FXS, demonstrating how these features are associated with language ability and ASD outcomes, as well as highlighting how these features in FXS may diverge from patterns observed in typically developing (TD) populations. We coded vocalization features during a standardized child-examiner interaction in 39 nine-month-old infants (22 FXS, 17 TD) who were then followed up at 24 months to determine developmental and clinical outcomes. Although many findings did not reach statistical significance in this small sample, our results provide preliminary evidence that infants with FXS may demonstrate patterns of associations with 24-month language outcomes that diverge from those observed in typical development, and that certain vocalization features may be associated with later ASD outcomes in the FXS group. These findings warrant more research exploring these features as potential early markers of ASD in FXS. Characterizing the associations of early vocalization features with ASD outcomes in FXS can inform mechanisms of ASD development that can then be tested broadly with other etiologically-distinct populations at risk for ASD. Thus, further characterization of these early vocalization features in typical and atypical development may lead to improved early identification methods, treatment approaches, and overall well-being of individuals in the ASD population.
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Benner, Allison. "Production and perception of laryngeal constriction in the early vocalizations of Bai and English infants." Thesis, 2009. http://hdl.handle.net/1828/1527.
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This study examines the production and perception of laryngeal constriction in the early vocalizations of Bai and English infants. The first part of the study documents the development of laryngeal voice quality features in the non-syllabic and syllabic utterances of Bai and English infants. The second part of the study focuses on the perception of laryngeal constriction in infant vocalizations by adult Bai and English listeners. The study is grounded in Esling’s (2005) model of the vocal tract, which characterizes the laryngeal vocal tract as a separate articulator, distinct from the oral vocal tract.
The study of Bai and English infants’ production identifies universal and language-specific patterns in infants’ development of laryngeal constriction. In the first months of life, most sounds produced by Bai and English infants are constricted. As the year progresses, all infants explore degrees of constriction in dynamic utterances that feature alternations between constricted and unconstricted laryngeal voice quality settings. As well, throughout the year, infants produce an increasing proportion of unconstricted vocalizations. By the end of the first year, when infants have developed increasing control of the laryngeal and oral vocal tracts, they produce syllabic utterances that begin to reflect the use of laryngeal voice quality features in their ambient language. English syllabic utterances are mostly unconstricted, mirroring the prevalence of unconstricted settings in the target language. By contrast, Bai syllabic utterances are mostly constricted or dynamic, reflecting the use of laryngeal voice quality in Bai, a register tone language that employs laryngeal voice quality features distinctively at the syllabic level.
The second part of the study highlights universal and language-particular patterns in Bai and English adults’ perception of laryngeal voice quality in infants’ utterances. In evaluating the importance of a range of infant sounds in learning the target language (Bai or English), adults from both language groups assign lower ratings to infant utterances that occur earlier in development, such as constricted non-syllabic utterances, and higher ratings to sounds that occur later, such as syllabic utterances with rapidly articulated syllables. Bai and English adults’ perceptions also reflect some language-specific patterns that correspond to language-particular characteristics identified in infants’ use of laryngeal voice quality in syllabic and non-syllabic utterances. These correspondences suggest that adults are attuned to laryngeal voice quality in infants, and that, in turn, infants become attuned to the use of laryngeal voice quality features in their ambient language early in development.
The production study demonstrates the fruitfulness of Esling’s (2005) model of the vocal tract in revealing previously undocumented patterns in the development of laryngeal constriction in the first year of life and in highlighting the importance of emergent laryngeal control as a stimulator of phonetic development. The perception study shows that adults whose native languages differ markedly in their use of laryngeal constriction can systematically evaluate laryngeal voice quality features in the full range of non-distress vocalizations produced by infants in the first year of life.
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Ya-WenChen and 陳雅雯. "The trends of growth and changes in early vocalization: A longitudinal study of Mandarin-learning infants from 4 to 12 months old." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/794wp3.
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碩士國立成功大學
外國語文學系
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The goal of this study is to apply the naturalistic way of justifying early infant speech to Mandarin Chinese data based on English guidelines, and to seek the possible method, principle, or tool for measuring the changes and trends of speech in the developmental process from 4 to 12 months of age. The data was randomly chosen from a large database of longitudinal study, including 8 infant participants. The infant natural speech was collected through recording twice every month. All the recordings went through preliminary selection, and one of the audiotapes was chosen per 2-month intervals from 4 to 12 months old. Moreover, all intelligible utterances were coded as certain vocalization types for further analysis. Six parameters are applied from Fagan (2005) to analyze early vocalizations: temporal duration, number of sounds per utterance, number of seconds per sound, number of supra-glottal consonants, number of syllables and number of repetitions. In addition, the study explores the components of infant speech utterances (number of single syllable, number of single vowel, number of word production, etc.) by statistical analysis. Major findings in this study are: (a) the naturalistic way of identifying infant vocalization instead of traditional transcription is suitable for Mandarin-speaking data collected from three developmental stages: pre-babbling (PreCB), canonical babbling (CB), and post-babbling (PostCB); (b) the changes of the characteristics of infant vocalization show a significant progress during canonical babbling period; (c) through Pearson Correlation Analysis from SPSS, the statistics show that six parameters present significant correlation with each other. Furthermore, the correlation between six parameters and three developmental stages are significant at CB and PostCB stages except number of seconds per sound. The present study suggests that canonical babbling stage plays a dominant role as the watershed during infant speech development. For future study, to seek a more precise measurement and a more natural way of data representation at CB stage is a must.
Book chapters on the topic "Early infant vocalizations"
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Oiler, D. Kimbrough. "Metaphonology and Infant Vocalizations." In Precursors of Early Speech, 21–35. London: Palgrave Macmillan UK, 1986. http://dx.doi.org/10.1007/978-1-349-08023-6_3.
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Holmgren, Karin, Björn Lindblom, Göran Aurelius, Birgitta Jailing, and Rolf Zetterström. "On the Phonetics of Infant Vocalization." In Precursors of Early Speech, 51–63. London: Palgrave Macmillan UK, 1986. http://dx.doi.org/10.1007/978-1-349-08023-6_5.
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Lester, Barry M., Michael Corwin, and Howard Golub. "Early Detection of the Infant at Risk Through Cry Analysis." In The Physiological Control of Mammalian Vocalization, 395–411. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1051-8_21.
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Rodríguez, Fernando G. "Multimodal Expression in Communicative Functions, Gestures, Vocalizations, and the Contribution of Early Musicality." In Moving and Interacting in Infancy and Early Childhood, 247–83. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08923-7_8.
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"11. Early Diagnostic Signs of Autism: Preliminary Findings for Infant Vocalizations." In On Under-reported Monolingual Child Phonology, 229–51. Multilingual Matters, 2020. http://dx.doi.org/10.21832/9781788928953-014.
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Bloom, Kathleen. "Chapter 6 Selectivity and Early Infant Vocalization." In The Development of attention - Research and Theory, 121–36. Elsevier, 1990. http://dx.doi.org/10.1016/s0166-4115(08)60453-7.
Full textConference papers on the topic "Early infant vocalizations"
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Asada, Minoru, and Nobutsuna Endo. "Infant-caregiver interactions affect the early development of vocalization." In 2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2015. http://dx.doi.org/10.1109/embc.2015.7319600.
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Lacerda, Francisco, and Lisa Gustavsson. "Predicting the consequences of vocalizations in early infancy." In Interspeech 2007. ISCA: ISCA, 2007. http://dx.doi.org/10.21437/interspeech.2007-633.
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