ArticlePloS one2022
Perspectives on the origin of language: Infants vocalize most during independent vocal play but produce their most speech-like vocalizations during turn taking.
Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- Ecologically-grounded observations offer unique insights into the embodied and embedded nature of infant learning.Human development · 2026Article
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- Context Shapes (Proto)Conversations in the First Year of Life.Developmental science · 2025Article
- The robustness of speech-like vocalization in typically developing infants and infants with autism.Research in developmental disabilities · 2025Article
- Infants' home auditory environment: Background sounds shape language interactions.Developmental psychology · 2024Article
- Canonical babbling trajectories across the first year of life in autism and typical development.Autism : the international journal of research and practice · 2024Article
- Vocal Characteristics of Children With Cerebral Palsy and Anarthria.Journal of speech, language, and hearing research : JSLHR · 2024Article
- The COL6A5-p.Glu2272* mutation induces chronic itch in mice.Mammalian genome : official journal of the International Mammalian Genome Society · 2024Article
- Article
- From emotional signals to symbols.Frontiers in psychology · 2024Article
- Within arms reach: Physical proximity shapes mother-infant language exchanges in real-time.Developmental cognitive neuroscience · 2023Article
- Embodied and Embedded Learning: Child, Caregiver, and Context.Current directions in psychological science · 2023Article
- Article
- The mountain stream of infant development.Infancy : the official journal of the International Society on Infant Studies · 2023Article
- Understanding speech and language in tuberous sclerosis complex.Frontiers in human neuroscience · 2023Review
- The role of dyadic combinations of infants' behaviors and caregivers' verbal and multimodal responses in predicting vocabulary outcomes.Infancy : the official journal of the International Society on Infant StudiesArticle
- Article
- Parentese Elicits Infant Speech-Like Vocalizations in Typically Developing and Autistic Infants.Infancy : the official journal of the International Society on Infant StudiesArticle
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
A growing body of research emphasizes both endogenous and social motivations in human vocal development. Our own efforts seek to establish an evolutionary and developmental perspective on the existence and usage of speech-like vocalizations ("protophones") in the first year of life. We evaluated the relative occurrence of protophones in 40 typically developing infants across the second-half year based on longitudinal all-day recordings. Infants showed strong endogenous motivation to vocalize, producing vastly more protophones during independent vocal exploration and play than during vocal turn taking. Both periods of vocal play and periods of turn-taking corresponded to elevated levels of the most advanced protophones (canonical babbling) relative to periods without vocal play or without turn-taking. Notably, periods of turn taking showed even more canonical babbling than periods of vocal play. We conclude that endogenous motivation drives infants' tendencies to explore and display a great number of speech-like vocalizations, but that social interaction drives the production of the most speech-like forms. The results inform our previously published proposal that the human infant has been naturally selected to explore protophone production and that the exploratory inclination in our hominin ancestors formed a foundation for language.
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