Assessing Perceptual Effects of Interactive Tasks

Обзор

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.

Подробное описание

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.

Вмешательства

• Поведенческое 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.

Первичные конечные точки

• Intelligibility of recorded speech [Срок оценки: one 20 minute session]

Критерии участия

Критерии включения

• 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.

Критерии исключения

• None - if volunteer meets the inclusion criteria, then they will be enrolled

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Распределение

Не применимо

Модель

Одна группа

Маскирование

Открытое

Основная цель

Фундаментальное исследование

Центры проведения

США · 1 центр

• Speech Core, Pennsylvania State University — University Park

Публикации

• 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

Идентификаторы

NCT: NCT06828523 · STUDY00024154-2 · R01DC021714

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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