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Related Experiment Video

Updated: May 8, 2026

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing
04:30

An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing

Published on: October 25, 2019

Age differences in speech motor performance on a novel speech task.

Neeraja Sadagopan1, Anne Smith

  • 1Correspondence to Neeraja Sadagopan: Neeraja.Sadagopan@colorado.edu.

Journal of Speech, Language, and Hearing Research : JSLHR
|September 12, 2013
PubMed
Summary
This summary is machine-generated.

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Elderly adults showed significant age-related declines in nonword repetition accuracy and speed, but their speech motor coordination remained similar to younger adults. Practice improved performance for both age groups.

Area of Science:

  • Speech-language pathology
  • Gerontology
  • Motor control

Background:

  • Ageing can affect speech motor control and cognitive functions.
  • Nonword repetition tasks are sensitive to changes in speech production and cognitive abilities.

Purpose of the Study:

  • To investigate age-related changes in speech motor performance during nonword repetition.
  • To examine the influence of practice, nonword length, and complexity on speech motor skills in young and elderly adults.

Main Methods:

  • Assessed nonword repetition accuracy, lip coordination, and production duration in 16 young and 16 elderly adults over two days.
  • Utilized novel nonwords of increasing length and complexity.

Main Results:

Keywords:
agingkinematicsnonword repetitionpracticespeech motor controlspeech motor performance

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  • Significant age-related differences were observed in the accuracy and speed of repeating long, complex nonwords.
  • No age-related differences were found in speech motor coordination patterns.
  • Both age groups demonstrated within- and between-session improvements in speech motor performance, specific to age and nonword characteristics.

    • Conclusions:

    • Cognitive, sensory, and motor factors likely interact to influence nonword repetition abilities in older adults.
    • Individual differences in behavioral and speech motor performance are evident in elderly populations.