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@ARTICLE{Wolfrum:1010146,
      author       = {Wolfrum, Vera and Lehner, Katharina and Heim, Stefan and
                      Ziegler, Wolfram},
      title        = {{C}linical {A}ssessment of {C}ommunication-{R}elated
                      {S}peech {P}arameters in {D}ysarthria: {T}he {I}mpact of
                      {P}erceptual {A}daptation},
      journal      = {Journal of speech, language, and hearing research},
      volume       = {66},
      number       = {8},
      issn         = {1092-4388},
      address      = {Rockville, Md.},
      publisher    = {American Speech-Language-Hearing Assoc.},
      reportid     = {FZJ-2023-02974},
      pages        = {2622 - 2642},
      year         = {2023},
      abstract     = {Purpose: In current clinical practice, intelligibility of
                      dysarthric speech is commonly assessed by speech-language
                      therapists (SLTs), in most cases by the therapist caring for
                      the patient being diagnosed. Since SLTs are familiar with
                      dysarthria in general and with the speech of the individual
                      patient to be assessed in particular, they have an
                      adaptation advantage in understanding the patient's
                      utterances. We examined whether and how listeners'
                      assessments of communication-related speech parameters vary
                      as a function of their familiarity with dysarthria in
                      general and with the diagnosed patients in
                      particular.Method: Intelligibility, speech naturalness, and
                      perceived listener effort were assessed in 20 persons with
                      dysarthria (PWD). Patients' speech samples were judged by
                      the individual treating therapists, five dysarthria experts
                      who were unfamiliar with the patients, and crowdsourced
                      naïve listeners. Adaptation effects were analyzed using (a)
                      linear mixed models of overall scoring levels, (b)
                      regression models of severity dependence, (c) network
                      analyses of between-listener and between-parameter
                      relationships, and (d) measures of intra- and interobserver
                      consistency.Results: Significant advantages of dysarthria
                      experts over laypeople were found in all parameters. An
                      overall advantage of the treating therapists over
                      nonfamiliar experts was only seen in listening effort.
                      Severity-dependent adaptation effects occurred in all
                      parameters. The therapists' responses were heterogeneous and
                      inconsistent with those of the unfamiliar experts and the
                      naïve listeners.Conclusions: The way SLTs evaluate
                      communication-relevant speech parameters of the PWD whom
                      they care for is influenced not only by adaptation benefits
                      but also by therapeutic biases. This finding weakens the
                      validity of assessments of communication-relevant speech
                      parameters by the treating therapists themselves and
                      encourages the development and use of alternative methods.},
      cin          = {INM-1},
      ddc          = {610},
      cid          = {I:(DE-Juel1)INM-1-20090406},
      pnm          = {5251 - Multilevel Brain Organization and Variability
                      (POF4-525)},
      pid          = {G:(DE-HGF)POF4-5251},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {37486782},
      UT           = {WOS:001056733600005},
      doi          = {10.1044/2023_JSLHR-23-00105},
      url          = {https://juser.fz-juelich.de/record/1010146},
}