Leezenbaum, Nina
(2016)
Posture Development and Vocalization Production in Infants at Heightened Risk for Autism Spectrum Disorder.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
This is the latest version of this item.
Abstract
During the first 14 months of life, typically-developing (TD) infants demonstrate rapid advances in posture and vocal development. There is a striking synchronization in the emergence of important milestones in these two domains (e.g., Oller, 1980; Piper & Darrah, 1994). For example, between the ages of 6 and 8 months, TD infants begin to sit independently without relying on external support for balance. Around this same time, they begin to produce syllabic vocalizations, which are defined as consonant-vowel (CV) sounds that are characteristic of babbling (e.g., [ba]; Oller, 2000). Between approximately 10 and 12 months, most TD infants can stand unsupported and say their first words, and by the time they reach 14 months they are walking long distances and producing nearly 20 words (Fenson et al., 1994).
Although posture and vocal development were once considered unrelated, there is mounting evidence demonstrating a developmental pathway linking behaviors in these domains (see Iverson, 2010, for a review). Specifically, the emergence of new postures as well as increased postural control (i.e., the ability to maintain a stable posture over time) dramatically change infants’ experiences with objects, people, and their own bodies in ways that are relevant not only for motor development (e.g., reaching and manual exploration; Rochat & Goubet, 1995), but for development in other domains (e.g., vocalizations; Yingling, 1981). One implication of this framework is that even seemingly small disruptions in posture development can have cascading effects that lead to delays outside of the motor domain (see Iverson, 2010, for additional discussion).
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Details
| Item Type: |
University of Pittsburgh ETD
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| Status: |
Unpublished |
| Creators/Authors: |
| Creators | Email | Pitt Username | ORCID  |
|---|
| Leezenbaum, Nina | nbl3@pitt.edu | NBL3 | |
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| ETD Committee: |
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| Date: |
30 September 2016 |
| Date Type: |
Publication |
| Defense Date: |
27 August 2015 |
| Approval Date: |
30 September 2016 |
| Submission Date: |
31 July 2016 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
131 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Dietrich School of Arts and Sciences > Psychology |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
autism spectrum disorders, posture development, and vocalization development |
| Date Deposited: |
30 Sep 2016 19:02 |
| Last Modified: |
15 Nov 2016 14:35 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/29103 |
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Posture Development and Vocalization Production in Infants at Heightened Risk for Autism Spectrum Disorder. (deposited 30 Sep 2016 19:02)
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