Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
1300 participants
INTERVENTIONAL
2025-10-17
2029-02-28
Brief Summary
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Detailed Description
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Plans for Assignment - This is a single group study in which all participants will engage in the same tasks.
Delivery of Intervention: Solo listeners will participate in this study in a remote, asynchronous format. They will be recruited using the online participant recruitment platform Prolific © and will use their own laptop/computer and headphones.
Adequacy of Sample size: We will use n = 1300 listeners to achieve 80% power at alpha of .05 to detect between group differences with the assumption of medium effect sizes (Cohen's f = 0.3).
Adequacy of Analyses: The proposed statistical analyses (Generalized mixed effects regressions) are standard and will be used to analyze the effect of the intervention on the outcome measures described below.
Conditions
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Study Design
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NA
SINGLE_GROUP
Plans for Assignment - This is a single group study in which all participants will engage in the same tasks.
BASIC_SCIENCE
NONE
Study Groups
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Listener Perception of Speech Produced in Different Task Settings
Listeners will hear recorded speech of PALS and age-matched speakers produced within interactive and non-interactive contexts and indicate what they heard.
Listener judgements of speech produced in different tasks
Listeners will hear recorded speech of PALS and age-matched speakers across interactive and non-interactive tasks and indicate what they heard by clicking one of four words displayed on the screen. Standard attention checks and minimum performance thresholds (Theodore, 2021) will be used to ensure that listeners are engaged and are able to provide meaningful perceptual judgments.
Interventions
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Listener judgements of speech produced in different tasks
Listeners will hear recorded speech of PALS and age-matched speakers across interactive and non-interactive tasks and indicate what they heard by clicking one of four words displayed on the screen. Standard attention checks and minimum performance thresholds (Theodore, 2021) will be used to ensure that listeners are engaged and are able to provide meaningful perceptual judgments.
Eligibility Criteria
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Inclusion Criteria
* having no known speech, language or neurological disorders per self-report
* being a native monolingual speaker of American English
* having no experience communicating with people with dysarthria
* being between the ages of 18 and 65.
18 Years
65 Years
ALL
Yes
Sponsors
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National Institute on Deafness and Other Communication Disorders (NIDCD)
NIH
Penn State University
OTHER
Responsible Party
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Ji Min Lee, Ph.D.
Associate Professor
Principal Investigators
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Jimin Lee, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
The Pennsylvania State University
Navin Viswanathan, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
The Pennsylvania State University
Anne Olmstead, Ph.D.
Role: PRINCIPAL_INVESTIGATOR
The Pennsylvania State University
Locations
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Speech Core, Pennsylvania State University
University Park, Pennsylvania, United States
Countries
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Central Contacts
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Facility Contacts
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References
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Olmstead, A. J., Viswanathan, N., Cowan, T., & Yang, K. (2021). Phonetic adaptation in interlocutors with mismatched language backgrounds: A case for a phonetic synergy account. Journal of Phonetics, 87, 101054. . : . .
Olmstead AJ, Lee J, Viswanathan N. The Role of the Speaker, the Listener, and Their Joint Contributions During Communicative Interactions: A Tripartite View of Intelligibility in Individuals With Dysarthria. J Speech Lang Hear Res. 2020 Apr 27;63(4):1106-1114. doi: 10.1044/2020_JSLHR-19-00233. Epub 2020 Apr 17.
Other Identifiers
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STUDY00024154-2
Identifier Type: -
Identifier Source: org_study_id
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