The maturational gradient of infant vocalizations: Developmental stages and functional modules
- PMID: 34920296
- DOI: 10.1016/j.infbeh.2021.101682
The maturational gradient of infant vocalizations: Developmental stages and functional modules
Abstract
Stage models have been influential in characterizing infant vocalizations in the first year of life. These models are basically descriptive and do not explain why certain types of vocal behaviors occur within a particular stage or why successive patterns of vocalization occur. This review paper summarizes and elaborates a theory of Developmental Functional Modules (DFMs) and discusses how maturational gradients in the DFMs explain age typical vocalizations as well as the transitions between successive stages or other static forms. Maturational gradients are based on biological processes that effect the reconfiguration and remodeling of the respiratory, laryngeal, and craniofacial systems during infancy. From a dynamic systems perspective, DFMs are part of a complex system with multiple degrees of freedom that can achieve stable performance with relatively few control variables by relying on principles such as synergies, self-organization, nonlinear performance, and movement variability.
Keywords: Babbling; Developmental stages; Infant vocalizations; Modules.
Copyright © 2021 Elsevier Inc. All rights reserved.
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