Category Learning Retention in Adults With and Without Developmental Language Disorder
This study is looking at how adults, both with and without Developmental Language Disorder (DLD), learn and remember new information. DLD affects about 7% of people and can make learning and memory challenging. Researchers want to find the best way to help adults with DLD remember what they learn, especially overnight. You would participate in "Perceptual category training," which involves a computer task where you learn difficult sounds and images. The study aims to enroll 540 adults aged 18-55 who are native American English speakers with typical vision and hearing. Success will be measured by how well you can tell apart different speech sounds after one week and how well you can identify categories after 48 hours. The current recruitment status is unclear.
- Study design
- This interventional study plans to enroll 540 participants, including adults with and without Developmental Language Disorder. It will involve different training schedules over 24 hours.
- What's involved
- You would complete a forced-choice categorization task with feedback to learn difficult auditory and visual categories. The training will take place over 24 hours.
- Compensation
- Not stated in the trial record.
- Follow-up
- Your speech discrimination will be measured at 1 week, and category identification will be measured at 48 hours.
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Category Learning Retention in Adults With and Without Developmental Language Disorder
At a glance
Conditions
NCT05901493
Where you'd take part
This study runs at 2 sites. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.
Northeastern University
Boston, Massachusettsstudy coordinator listed
Recruiting
University of Delaware
Newark, Delawarestudy coordinator listed
Recruiting
Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.
Who to contact
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Inclusion
Exclusion
What this trial measures
- Speech discrimination - behavior1 week
Participants will be administered a short (approximately 4-minute) behavioral task. They will be exposed to two speech sounds, separated by a 1-second interval. Some sounds will begin with the dental stop consonant, and other sounds will begin with the retroflex stop consonant. Participants will be asked to decide if the two sounds they hear are the same or different. Accuracy will be converted to d-prime (a measure of signal detection). This d-prime score will be the primary behavioral outcome for speech discrimination.
- category identification - behavior48 hours
Participants will be administered a short (approximately 2 minutes) for each modality (auditory and visual). Participants will either hear (auditory - pure tone) or see (visual - gabor patch) a stimulus, and will need to choose which category the stimulus belongs to out of a choice of two. The percentage of trials that are answered correctly will be the primary behavioral outcome for auditory and visual category identification.