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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.
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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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Language is a system of communication that allows the expression of thoughts, ideas, and feelings. The brain processes language in both hemispheres.
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Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children...
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Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
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Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter...
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Updated: Sep 27, 2025

Infant Auditory Processing and Event-related Brain Oscillations
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Environmental noise, brain structure, and language development in children.

Katrina R Simon1, Emily C Merz2, Xiaofu He3

  • 1Department of Human Development, Teachers College, Columbia University, New York, NY, USA.

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|April 10, 2022
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Summary

Excessive childhood noise exposure is linked to poorer language skills and changes in brain structure. This study found reduced cortical thickness in the left inferior frontal gyrus (IFG) in children with high noise exposure.

Keywords:
BrainChild developmentLanguageMRINoise

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Speech and Language Pathology

Background:

  • Excessive noise exposure in childhood is linked to reduced language ability.
  • Underlying neurobiological mechanisms for this association are not well understood.
  • Environmental factors can influence neurodevelopmental trajectories.

Purpose of the Study:

  • To investigate the association between everyday noise exposure and language skills in children.
  • To examine if noise exposure relates to structural differences in language-related brain regions.
  • To test hypotheses linking noise exposure to poorer language skills and altered cortical structure.

Main Methods:

  • A diverse sample of 94 children aged 5-9 years underwent language assessments.
  • High-resolution MRI scans were used to measure cortical thickness and surface area of the left inferior frontal gyrus (IFG) and left superior temporal gyrus (STG).
  • Language Environmental Analysis (LENA) quantified daily environmental noise exposure in a subset of 43 children.

Main Results:

  • Children with higher exposure to excessive environmental noise showed reduced cortical thickness in the left inferior frontal gyrus (IFG).
  • No significant associations were found between noise exposure and cortical thickness in the left superior temporal gyrus (STG).
  • Language skills were not directly assessed for association with noise exposure or brain structure in this specific analysis.

Conclusions:

  • Excessive environmental noise exposure during childhood may be associated with neurobiological changes in language-related brain regions.
  • Reduced cortical thickness in the left IFG may be a mechanism linking noise exposure to language development.
  • These findings highlight the impact of home environmental factors, like noise, on children's neurodevelopment and language skills.