Foundations of Vocal Category Development in Autistic Infants
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| Title: | Foundations of Vocal Category Development in Autistic Infants |
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| Language: | English |
| Authors: | Pumpki Lei Su (ORCID |
| Source: | Journal of Autism and Developmental Disorders. 2025 55(3):862-872. |
| Availability: | Springer. Available from: Springer Nature. One New York Plaza, Suite 4600, New York, NY 10004. Tel: 800-777-4643; Tel: 212-460-1500; Fax: 212-460-1700; e-mail: customerservice@springernature.com; Web site: https://link.springer.com/ |
| Peer Reviewed: | Y |
| Page Count: | 11 |
| Publication Date: | 2025 |
| Sponsoring Agency: | National Institute on Deafness and Other Communication Disorders (NIDCD) (DHHS/NIH) National Institute of Mental Health (NIMH) (DHHS/NIH) |
| Contract Number: | R01DC015108 P50MH100029 |
| Document Type: | Journal Articles Reports - Research |
| Descriptors: | Autism Spectrum Disorders, Infants, Infant Behavior, Oral Language, Child Language, Speech Skills |
| DOI: | 10.1007/s10803-024-06267-9 |
| ISSN: | 0162-3257 1573-3432 |
| Abstract: | The present study compared the infant's tendency in the first year of life to produce clusters of particular vocal types (squeals, vocants, and growls) in typically developing (TD) and autistic infants. Vocal clustering provides evidence of vocal category formation and may establish a foundation for speech development. Specifically, we compared the extent of vocal clustering across outcome groups and age groups. We also examined the associations between the extent of vocal clustering and later outcomes at 2 years within the autistic group. Randomly selected 5-min segments (27,153 5-min segments total) from 1293 all-day home recordings from 103 TD infants and 44 autistic infants across the first year were humancoded (about 9.75 h of data coded per infant on average) to derive vocal clustering patterns. Fisher's exact tests were used to compare the occurrence of squeals versus vocants, as well as growls versus vocants, across coded segments. Infants in both groups demonstrated clear clustering patterns of squeals and growls across all age groups. The extent of vocal clustering in the autistic group did not correlate significantly with later language, repetitive behavior, or autism severity outcomes. These findings highlight the robustness of the systematic production of vocal categories across the first year of life. The similarity of the clustering patterns in the TD and autistic groups suggests that vocal category formation through active infant vocal exploration is a robust feature of early speech development. |
| Abstractor: | As Provided |
| Entry Date: | 2025 |
| Accession Number: | EJ1460752 |
| Database: | ERIC |
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| Abstract: | The present study compared the infant's tendency in the first year of life to produce clusters of particular vocal types (squeals, vocants, and growls) in typically developing (TD) and autistic infants. Vocal clustering provides evidence of vocal category formation and may establish a foundation for speech development. Specifically, we compared the extent of vocal clustering across outcome groups and age groups. We also examined the associations between the extent of vocal clustering and later outcomes at 2 years within the autistic group. Randomly selected 5-min segments (27,153 5-min segments total) from 1293 all-day home recordings from 103 TD infants and 44 autistic infants across the first year were humancoded (about 9.75 h of data coded per infant on average) to derive vocal clustering patterns. Fisher's exact tests were used to compare the occurrence of squeals versus vocants, as well as growls versus vocants, across coded segments. Infants in both groups demonstrated clear clustering patterns of squeals and growls across all age groups. The extent of vocal clustering in the autistic group did not correlate significantly with later language, repetitive behavior, or autism severity outcomes. These findings highlight the robustness of the systematic production of vocal categories across the first year of life. The similarity of the clustering patterns in the TD and autistic groups suggests that vocal category formation through active infant vocal exploration is a robust feature of early speech development. |
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| ISSN: | 0162-3257 1573-3432 |
| DOI: | 10.1007/s10803-024-06267-9 |
