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The Language Development Survey: a screening tool for delayed language in toddlers.

L Rescorla1

  • 1Bryn Mawr College, PA.

The Journal of Speech and Hearing Disorders
|November 1, 1989
PubMed
Summary

The Language Development Survey (LDS) effectively screens 2-year-olds for language delay. This reliable tool accurately identifies children needing intervention, with high sensitivity and specificity.

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Area of Science:

  • Developmental Pediatrics
  • Speech-Language Pathology
  • Child Psychology

Background:

  • Early identification of language delay is crucial for timely intervention.
  • Existing screening tools may have limitations in accuracy or practicality.
  • The Language Development Survey (LDS) was developed as a parent-completed screening tool.

Purpose of the Study:

  • To evaluate the reliability and validity of the Language Development Survey (LDS) for identifying language delay in 2-year-old children.
  • To assess the sensitivity and specificity of the LDS in a clinical setting.
  • To report prevalence data of language delay using the LDS.

Main Methods:

  • Four studies utilized the LDS, a parent-completed vocabulary checklist (approx. 10 min completion time).
  • Reliability was assessed using Cronbach's alpha and test-retest methods.
  • Validity was examined by correlating LDS scores with established developmental assessments (Bayley, Reynell, Preschool Language Scale). Sensitivity and specificity were determined using a cutoff of <50 words or no word combinations.

Main Results:

  • The LDS demonstrated excellent reliability and high correlation with established expressive vocabulary measures.
  • The survey exhibited excellent sensitivity and specificity for identifying language delay.
  • A criterion of <50 words or no word combinations at 2 years resulted in low false positive and false negative rates.
  • Data from three studies confirmed the LDS's utility in pediatric practices.
  • Prevalence data were reported for over 500 children across seven samples, using three severity cutoffs.

Conclusions:

  • The Language Development Survey (LDS) is a reliable and valid tool for screening 2-year-old children for language delay.
  • The LDS demonstrates high accuracy (sensitivity and specificity) in identifying children at risk for language delays.
  • The LDS is a practical and effective screening tool for use in pediatric settings, aiding in early intervention.

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