About this trial
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.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
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
Disqualifiers
None - if volunteer meets the inclusion criteria, then they will be enrolled
Trial design
Single group
Treatments tested in this trial
Listener judgements of speech produced in different tasks
BehavioralListeners 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.
Treatment groups
Trial outcomes
Primary outcomes
Intelligibility of recorded speech
Perceptual judgments will be provided by solo, naïve listeners who did not participate in the interactions. Listeners will hear recorded speech of PALS and age-matched speakers recorded across the different tasks and indicate what they heard. The score will be expressed in percent. The possible range is between 0-100%. The higher scores mean a better outcome.
Sponsors and contacts
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Penn State University
Lead sponsor
National Institute on Deafness and Other Communication Disorders (NIDCD)
Collaborator