Assessing Perceptual Effects of Interactive Tasks
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Listener judgements of speech produced in different tasks.
- Who it may be relevant to
- Registry conditions: Amyotrophic Lateral Sclerosis. Basic parameters: 18 years — 65 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- United States
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
In this study, we will evaluate how solo, naive listeners perceive the speech of people with amyotrophic lateral sclerosis (ALS) and age-matched speakers produced across interactive and non-interactive contexts with an unfamiliar, naive interlocutor.
Detailed description
Listeners will hear recorded speech of PALS and age-matched speakers and indicate what they heard. Recorded speech consists of vowels and consonants produced in non-interactive and interactive tasks. The perceptual judgements will be compared to see whether interactive contexts have similar perceptual effects across the two groups.
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.
Interventions
- Behavioral 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.
Primary outcome measures
- Intelligibility of recorded speech [Time frame: one 20 minute session]
Eligibility criteria
Inclusion criteria
- passing the remote hearing screening
- 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.
Exclusion criteria
- None - if volunteer meets the inclusion criteria, then they will be enrolled
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- N/A
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Basic science
Study locations
United States · 1 center
- Speech Core, Pennsylvania State University — University Park
Publications
- 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. PMID 32302251
Identifiers
NCT: NCT06828523 · STUDY00024154-2 · R01DC021714