Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Variability and sequential order of consonant normalization in children with speech delay.

F A Gruber1

  • 1University of Wisconsin-Madison, USA. gruberfa@hal.lamar.edu

Journal of Speech, Language, and Hearing Research : JSLHR
|May 6, 1999
PubMed
Summary

This study used survival analysis to rank English consonant acquisition in children with speech delay (SD). Results align with developmental theories, supporting the strong delay hypothesis.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Tutorial: survival analysis--a statistic for clinical, efficacy, and theoretical applications.

Journal of speech, language, and hearing research : JSLHR·1999
Same author

Probability estimates and paths to consonant normalization in children with speech delay.

Journal of speech, language, and hearing research : JSLHR·1999
Same author

Developmental phonological disorders. II. Short-term speech-sound normalization.

Journal of speech and hearing research·1994
Same author

Developmental phonological disorders. III: Long-term speech-sound normalization.

Journal of speech and hearing research·1994

Area of Science:

  • Linguistics
  • Developmental Psychology
  • Speech-Language Pathology

Background:

  • Establishing a definitive rank order for English consonant development is challenging due to individual variability and theoretical discrepancies.
  • Previous models, like Jakobson's, offer insights but don't fully account for observed acquisition patterns.
  • Speech delay (SD) presents unique challenges in understanding typical developmental trajectories.

Purpose of the Study:

  • To establish a reliable rank order of English consonant acquisition in children with speech delay.
  • To investigate the utility of survival analytic techniques in developmental speech research.
  • To test the validity of the strong delay hypothesis by comparing derived probabilities with normative data.

Main Methods:

Related Experiment Videos

  • Utilized Kaplan-Meier (KM) survival analysis on conversational speech data from 24 children with speech delay over two years.
  • Determined rank order of acquisition for consonants with probabilities exceeding .75.
  • Applied the strong delay hypothesis to lag normalization probabilities for comparison with existing normative studies.

    • Main Results:

    • A rank order of consonant acquisition was established, showing alignment with place and manner of articulation, partially mirroring Jakobson's predictions.
    • Lagging the derived probabilities according to the strong delay hypothesis led to convergence with established normative data (Prather et al., 1975; Sander, 1972).
    • The findings indicate that survival analysis can effectively model consonant acquisition patterns.

    Conclusions:

    • Survival analytic techniques, specifically KM analysis, provide a robust method for ranking consonant acquisition, accommodating individual variability.
    • The convergence of results supports the generalizability of the findings and provides evidence for the strong delay hypothesis in speech development.
    • This approach offers a more nuanced understanding of consonant acquisition in children with speech delay.