The Trajectory of Concurrent Motor and Vocal Behaviors Over the Transition to Crawling in Infancy

Berger, Sarah E.; Cunsolo, Marian; Ali, Mariam; Iverson, Jana M.

doi:10.1111/infa.12179

Cited by 16 publications

(11 citation statements)

References 40 publications

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“…For purposes of comparison, we also included data from a group of infants with a typically developing older sibling and no family history of ASD. These low-risk (LR) infants were observed as part of a separate completed longitudinal study (e.g., Berger, Cunsolo, Ali, & Iverson, 2017;Iverson, Hall, Nickel, & Wozniak, 2007) that utilized a similar observation schedule and identical procedures. All HR and LR infants were born at term with no pre-or postnatal complications and came from English-speaking homes.…”

Section: Motor and Communicative Development And The Early Identificamentioning

confidence: 99%

Early Motor and Communicative Development in Infants With an Older Sibling With Autism Spectrum Disorder

Iverson

2018

J Speech Lang Hear Res

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Purpose A recent approach to identifying early markers of risk for autism spectrum disorder (ASD) has been to study infants who have an older sibling with ASD. These infants are at heightened risk (HR) for ASD and for other developmental difficulties, and even those who do not receive an eventual ASD diagnosis manifest a high degree of variability in trajectories of development. The primary goal of this review is to summarize findings from research on early motor and communicative development in these HR infants. Method This review focuses on 2 lines of inquiry. The first assesses whether delays and atypicalities in early motor abilities and in the development of early communication provide an index of eventual ASD diagnosis. The second asks whether such delays also influence infants' interactions with objects and people in ways that exert far-reaching, cascading effects on development. Results HR infants who do and who do not receive a diagnosis of ASD vary widely in motor and communicative development. In addition, variation in infant motor and communicative development appears to have cascading effects on development, both on the emergence of behavior in other domains and on the broader learning environment. Conclusions Advances in communicative and language development are supported by advances in motor skill. When these advances are slowed and/or when new skills are not consolidated and remain challenging for the infant, the enhanced potential for exploration afforded by new abilities and the concomitant increase in opportunities for learning are reduced. Improving our understanding of communicative delays of the sort observed in ASD and developing effective intervention methods requires going beyond the individual to consider the constant, complex interplay between developing communicators and their environments. Presentation Video https://doi.org/10.23641/asha.7299308

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Section: Motor and Communicative Development And The Early Identificamentioning

confidence: 99%

Early Motor and Communicative Development in Infants With an Older Sibling With Autism Spectrum Disorder

Iverson

2018

J Speech Lang Hear Res

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“…On one extreme, infants could suppress already-mastered skills and wait to use them until the later appearing skills improve (Berger, 2004;Berger, Cunsolo, Ali, & Iverson, 2017;Bloom & Tinker, 2001). That is, infants might temporarily ignore an alreadymastered skill to focus their attention and energy on acquiring a new one.…”

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confidence: 99%

Object Interaction and Walking: Integration of Old and New Skills in Infant Development

Heiman

Cole

Lee

et al. 2019

Infancy

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Manual skills such as reaching, grasping, and exploring objects appear months earlier in infancy than locomotor skills such as walking. To what extent do infants incorporate an old skill (manual actions on objects) into the development of a new skill (walking)? We video recorded 64 sessions of infants during free play in a laboratory playroom. Infants’ age (12.7–19.5 months), walking experience (0.5–10.3 months), and walking proficiency (speed, step length, etc.) varied widely. We found that the earlier developing skills of holding and exploring objects were immediately incorporated into the later developing skill of walking. Although holding incurred a reliable cost to infants’ gait patterns, holding and exploring objects in hand were relatively common activities and did not change with development. Moreover, holding objects was equally common in standing and walking. However, infants did not interact with objects indiscriminately: Object exploration was more frequent while standing than walking, and infants selectively chose lighter objects to carry and explore. Findings suggest that the earlier appearance of some skills may serve to motivate and enrich later appearing skills.

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“…However, it is important to consider that acquiring new motor skills may not always be facilitative, especially in the short term. Crawling interferes with new crawlers' vocalizations [27] and carrying objects disrupts new walkers' balance [28].…”

Section: Changes In Exploratory Abilities Have Downstream E↵ectsmentioning

confidence: 99%

The ecology of infants’ perceptual-motor exploration

Franchak

2020

Current Opinion in Psychology

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The first goal of this article is to review recent advances in understanding how new motor skills facilitate infants' exploration-the active acquisition of information about their environments. New postural abilities, such as sitting and walking, qualitatively change how infants can learn about objects, places, and people with with potential downstream e↵ects on infants' later cognitive and linguistic development. What's missing, however, is a characterization of how new exploratory abilities change infants' everyday experiences. Presumably, changes in opportunities for learning mediate the downstream e↵ects of posture on other developmental achievements. Accordingly, the second goal of this article is to discuss the importance of measuring the ecology of infants' everyday experiences and how they vary.

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The Trajectory of Concurrent Motor and Vocal Behaviors Over the Transition to Crawling in Infancy

Cited by 16 publications

References 40 publications

Early Motor and Communicative Development in Infants With an Older Sibling With Autism Spectrum Disorder

Early Motor and Communicative Development in Infants With an Older Sibling With Autism Spectrum Disorder

Object Interaction and Walking: Integration of Old and New Skills in Infant Development

The ecology of infants’ perceptual-motor exploration

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