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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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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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Understanding speech and language in tuberous sclerosis complex.

Tanjala T Gipson1, D Kimbrough Oller2, Daniel S Messinger3,4,5,6

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Summary
This summary is machine-generated.

Tuberous Sclerosis Complex (TSC) and autism spectrum disorder (ASD) share language delays. Early precursors like babbling and vocal turn-taking are crucial for understanding and treating speech and language difficulties in TSC with ASD.

Keywords:
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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Genetics

Background:

  • Tuberous Sclerosis Complex (TSC) is a neurocutaneous disorder with a high co-occurrence of autism spectrum disorder (ASD), affecting approximately 50% of individuals.
  • TSC is a significant cause of syndromic ASD, making the study of language development in this population critical for broader implications in ASD research.
  • While language difficulties are reported in up to 70% of individuals with TSC, current research often relies on summary scores, lacking detailed mechanistic understanding.

Purpose of the Study:

  • To review current knowledge on language development in individuals with Tuberous Sclerosis Complex (TSC) and its relationship with autism spectrum disorder (ASD).
  • To identify early precursors of language development that are delayed in both TSC and ASD, guiding future research directions.
  • To explore potential strategies for earlier recognition and treatment of language difficulties in TSC.

Main Methods:

  • Mini-review of existing literature on speech and language development in TSC and ASD.
  • Analysis of early language precursors, including canonical babbling, volubility, vocal turn-taking, shared attention, and fast mapping.
  • Synthesis of findings to identify commonalities and differences in language trajectories between TSC, ASD, and syndromic TSC with ASD.

Main Results:

  • Canonical babbling and volubility, key predictors of speech emergence, are delayed in infants with TSC, mirroring delays seen in idiopathic ASD.
  • The review identifies vocal turn-taking, shared attention, and fast mapping as other critical early language precursors that warrant investigation in TSC.
  • Understanding these precursors can illuminate the mechanisms behind speech and language delays in TSC and their connection to ASD.

Conclusions:

  • Language development in TSC is significantly impacted, with early precursors like babbling and volubility showing delays similar to ASD.
  • Investigating precursors such as vocal turn-taking, shared attention, and fast mapping is essential for a comprehensive understanding of speech and language development in TSC.
  • This research aims to improve early detection and intervention strategies for pervasive language difficulties in individuals with TSC, with or without ASD.