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Related Concept Videos

Language Development01:22

Language Development

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Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
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The myelin sheath is a multilayered lipid and protein covering that insulates the axon of a neuron, enhancing the speed of nerve impulse conduction. Axons without this sheath are referred to as unmyelinated. Two types of neuroglia, Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS) are responsible for producing myelin sheaths.
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Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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The nativist approach to infant cognitive development proposes that infants are born with inherent knowledge structures that allow them to interpret the world almost immediately. This perspective contrasts with earlier developmental theories, such as those proposed by Jean Piaget, which emphasized a more gradual acquisition of cognitive abilities through interaction with the environment. One key concept in this approach is object permanence — the understanding that objects continue to...
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Piaget's Stage 1 of Cognitive Development01:14

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The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
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Related Experiment Video

Updated: Aug 11, 2025

Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
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Language Experience during Infancy Predicts White Matter Myelination at Age 2 Years.

Elizabeth Huber1,2, Neva M Corrigan3,2, Vasily L Yarnykh4

  • 1Institute for Learning & Brain Sciences, University of Washington, Seattle, Washington 98195 ehuber@uw.edu.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|February 6, 2023
PubMed
Summary

Parent-infant conversational turns (CT) uniquely predict white matter myelination in language pathways by age 2. This interactive language experience, starting as early as 6 months, supports brain development for long-term language ability.

Keywords:
conversational turnsdevelopmentearly childhoodinfancylanguage environmentwhite matter

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Area of Science:

  • Developmental neuroscience
  • Language acquisition
  • Neuroimaging

Background:

  • Parental language input is crucial for early language achievement.
  • Few studies link parental input and parent-infant interactions to early brain development.
  • Understanding the neural basis of early language development is essential.

Purpose of the Study:

  • To examine the relationship between parent-infant language interactions and white matter myelination in infants.
  • To identify specific aspects of language input that influence brain development.
  • To investigate the longitudinal effects of conversational turns on white matter development.

Main Methods:

  • Naturalistic home recordings of parent-child interactions from 6 to 24 months.
  • Quantitative MRI to estimate white matter myelination at 2 years.
  • Analysis focused on the arcuate fasciculus (AF) and superior longitudinal fasciculus (SLF).

Main Results:

  • Frequency of parent-infant conversational turns (CT) uniquely predicted myelin density in the left AF and SLF.
  • The effect of CT was independent of total speech exposure and child speech.
  • CT effects were observed as early as 6 months and persisted throughout infancy.

Conclusions:

  • Early parent-infant conversational interactions are linked to white matter myelination in language-critical pathways.
  • Interactive language experience, not just speech exposure, uniquely contributes to brain development.
  • These findings highlight the importance of early, structured language interactions for long-term language ability.