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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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Cognitive Flexibility for Semantic and Perceptual Information in Developmental Stuttering.

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Preschool children who stutter (CWS) demonstrate similar accuracy but slower reaction times when shifting cognitive flexibility between semantic and perceptual information compared to children who do not stutter (CWNS). This indicates reduced efficiency in cognitive processing for CWS.

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Area of Science:

  • Developmental Psychology
  • Speech and Language Pathology
  • Cognitive Neuroscience

Background:

  • Cognitive flexibility is crucial for learning and adaptation.
  • Understanding cognitive differences in children who stutter (CWS) is important for early intervention.
  • Previous research suggests potential cognitive variations in CWS.

Purpose of the Study:

  • To investigate cognitive flexibility in preschool children who stutter (CWS) versus children who do not stutter (CWNS).
  • To compare performance on tasks requiring shifts between semantic and perceptual information.
  • To analyze reaction time and accuracy as measures of cognitive flexibility.

Main Methods:

  • Participants included 44 CWS and 44 CWNS aged 3;0 to 5;11.
  • Cognitive flexibility was assessed using semantic and perceptual categorization tasks.
  • Children matched target objects to semantic or perceptual associates, with reaction time and accuracy recorded.

Main Results:

  • Accuracy in shifting between semantic and perceptual representations was comparable between CWS and CWNS.
  • CWS exhibited significantly slower reaction times than CWNS when shifting cognitive representations.
  • Both groups found switching between perceptual representations more challenging than semantic ones.

Conclusions:

  • Preschool children who stutter (CWS) are less efficient (slower) in cognitive flexibility than their non-stuttering peers.
  • This difference in efficiency extends to both verbal (semantic) and nonverbal (perceptual) domains.
  • While accuracy is maintained, the processing speed for cognitive shifts is impacted in CWS.