Direct Magnitude Estimates of Speech Intelligibility in Dysarthria: Effects of a Chosen Standard

Weismer, Gary; Laures, Jacqueline S.
June 2002
Journal of Speech, Language & Hearing Research;Jun2002, Vol. 45 Issue 3, p421
Academic Journal
Direct magnitude estimation (DME) has been used frequently as a perceptual scaling technique in studies of the speech intelligibility of persons with speech disorders. The technique is typically used with a standard, or reference stimulus, chosen as a good exemplar of "midrange" intelligibility. In several published studies, the standard has been chosen subjectively, usually on the basis of the expertise of the investigators. The current experiment demonstrates that a fixed set of sentence-level utterances, obtained from 4 individuals with dysarthria (2 with Parkinson disease, 2 with traumatic brain injury) as well as 3 neurologically normal speakers, is scaled differently depending on the identity of the standard. Four different standards were used in the main experiment, three of which were judged qualitatively in two independent evaluations to be good exemplars of midrange intelligibility. Acoustic analyses did not reveal obvious differences between these four standards but suggested that the standard with the worst-scaled intelligibility had much poorer voice source characteristics compared to the other three standards. Results are discussed in terms of possible standardization of midrange intelligibility exemplars for DME experiments.


Related Articles

  • Residual Effects of Preschool Phonology Disorders in Grade School, Adolescence, and Adulthood. Lewis, Barbara A.; Freebairn, Lisa // Journal of Speech & Hearing Research;Aug92, Vol. 35 Issue 4, p819 

    Presents a study which examined the performance of people with a history of a preschool phonology disorder on measures of phonology, reading and spelling at grade school age, adolescence and adulthood. Method; Results and discussion.

  • phonological disability.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p1775 

    A definition of the term "phonological disability," which refers to developmental phonological disorders, is presented.

  • phonological disorder.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p1775 

    A definition of the term "phonological disorder," which refers to a disorder in which a person does not use speech sounds appropriate for age and dialect, is presented.

  • Acoustic Characteristics of /s/ in Adolescents. Flipsen Jr., Peter; Shriberg, Lawrence // Journal of Speech, Language & Hearing Research;Jun1999, Vol. 42 Issue 3, p663 

    Presents information on a study which constructed a reference database against which misarticulations of /s/ can be compared. Acoustic descriptions of /s/; Spectra of /s/; Results and discussion.

  • Listener Comprehension of Severely Dysarthric Speech: Effects of Linguistic Cues and Stimulus Cohesion. Hustad, Katherine C.; Beukelman, David R. // Journal of Speech, Language & Hearing Research;Jun2002, Vol. 45 Issue 3, p545 

    This study is the second in a two-part series examining the effects of linguistic variables on listener processing of dysarthric speech. The first study (see K. C. Hustad & D. R. Beukelman, 2001) examined the effects of experimentally imposed topic cues, alphabet cues, and combined cues along...

  • The Interaction of Ambient Frequency and Feature Complexity in the Diphthong Errors of Children With Phonological Disorders. Stokes, Stephanie F.; Tse-Kay Lau, Jessica; Ciocca, Valter // Journal of Speech, Language & Hearing Research;Dec2002, Vol. 45 Issue 6, p1188 

    Presents information on a study that examined the interaction of ambient frequency and feature complexity in the diphthong errors produced by Cantonese-speaking children with phonological disorders. Research method; Results and discussion on the study; Conclusions.

  • Prologue: Perspectives in the Assessment of Children's Speech. Williams, A. Lynn // American Journal of Speech-Language Pathology;Aug2002, Vol. 11 Issue 3, p211 

    Focuses on the efficacy of phonological intervention that is rooted in the assessment of speech disorder, its nature, characteristics, severity and prognosis for improvement. Role of theory in the assessment framework; Basis for the selection of treatment targets.

  • articulation disorder.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p193 

    A definition of the term "articulation disorder," which pertains to the inability to produce speech sounds correctly, is presented.

  • Feature Analysis of Segmental Errors in Children With Phonological Disorders. Forrest, Karen; Morrisette, Michele L. // Journal of Speech, Language & Hearing Research;Feb1999, Vol. 42 Issue 1, p187 

    Presents a feature analysis of segmental errors in children with phonological disorders. Methods; Statistical analysis; Results; Discussion.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics