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This study investigates developmental language disorder (DLD) in preschoolers by examining etiological, neural, cognitive, and psychosocial factors. The goal is to improve early identification and intervention for DLD.

Keywords:
(Nonverbal) short-term memoryArtificial grammar learningChild behaviorChild temperamentClinical EEGDevelopmental language disorderEvent-related potentialsGeneticsLanguage acquisitionSequential bilingualismSpecific language impairment

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Area of Science:

  • Developmental psychology
  • Linguistics
  • Neuroscience

Background:

  • Developmental Language Disorder (DLD) affects approximately 7% of preschoolers, representing a significant disability group.
  • The exact causes and linguistic variations of DLD remain unclear, necessitating further research.
  • This project adopts a multiple deficit model to explore DLD across various analytical levels.

Purpose of the Study:

  • To comprehensively investigate Developmental Language Disorder (DLD) in preschool children.
  • To identify reliable prediction and early identification methods for DLD.
  • To understand the interplay of risk and protective factors in DLD.

Main Methods:

  • Longitudinal study of 227 children with suspected DLD and 160 typically developing peers.
  • Multi-level analysis including etiological, neural, cognitive, behavioral, and psychosocial factors.
  • Utilizing saliva samples, EEG, cognitive tasks, speech assessments, and questionnaires.

Main Results:

  • The study is ongoing, with data collection and analysis in progress.
  • Expected results will detail correlations between psychological characteristics, environment, and DLD.
  • Findings will elucidate DLD in monolingual vs. bilingual children and its cognitive underpinnings.

Conclusions:

  • The project aims to deepen the understanding of DLD's complex etiology and presentation.
  • Findings will inform the development of targeted interventions for linguistic and non-linguistic aspects of DLD.
  • This research will contribute to improving literacy development outcomes for children with DLD.