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Speech-sounds perception test: long- and short-forms reliability adjusted for item difficulty.

R A Charter1

  • 1VA Long Beach Healthcare Systems Medical Center, California, USA.

Perceptual and Motor Skills
|April 27, 2001
PubMed
Summary
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The Speech-Sounds Perception Test demonstrates strong internal consistency reliability across its long and short forms. Reliability for the six series is also acceptable for research and clinical use.

Area of Science:

  • Neuroscience
  • Psychometrics
  • Speech-Language Pathology

Background:

  • Assessing speech sound perception is crucial for diagnosing language and cognitive disorders.
  • Reliability of assessment tools is paramount for accurate patient evaluation.

Purpose of the Study:

  • To determine the internal consistency reliability of the Speech-Sounds Perception Test.
  • To evaluate the reliability of different forms of the test: long form, short form, and six series.

Main Methods:

  • Internal consistency reliability was calculated using Cronbach's alpha.
  • The study utilized a large sample (N=632) including normal, brain-damaged, and undiagnosed patients.

Main Results:

  • The long form achieved a reliability coefficient of .9159.

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  • The short form showed a reliability of .8410.
  • The six series yielded reliability scores ranging from .6109 to .7310.

    • Conclusions:

    • The Speech-Sounds Perception Test exhibits excellent internal consistency reliability for its long and short forms.
    • The reliability of the six series is adequate, supporting its use in clinical and research settings.
    • These findings support the use of the Speech-Sounds Perception Test as a reliable measure of speech sound perception.