Actively Recruiting
Language Outcomes, Mechanisms, and Trajectories in Adults With and Without Developmental Language Disorder
Led by University of Iowa · Updated on 2025-03-27
400
Participants Needed
1
Research Sites
52 weeks
Total Duration
On this page
Sponsors
U
University of Iowa
Lead Sponsor
N
National Institutes of Health (NIH)
Collaborating Sponsor
AI-Summary
What this Trial Is About
Researchers are studying adults aged 30 to 35 who have Developmental Language Disorder (DLD) or typical language skills to understand the long-term outcomes and cognitive mechanisms related to DLD. They use data from the Iowa Longitudinal Study, which followed participants from kindergarten through 10th grade, to examine language abilities over time and how they differ in adulthood. The study aims to see how language skills develop or change in adults with DLD and to explore how real-time language processing might explain these differences. Participants complete behavioral tasks involving eye-tracking to observe how they process written and spoken language in real time. These tasks measure how quickly and accurately participants identify target images or words compared to similar competing items. Two groups participate: adults with below-average language skills (DLD) and adults with typical language skills. The study involves six eye-tracking tasks that assess language processing at multiple levels. During the study, participants' eye movements are tracked while they perform language tasks lasting about two hours. Researchers collect detailed language measures to understand individual differences and developmental trajectories. The study evaluates both retrospective data from childhood and new assessments in adulthood to analyze language abilities, processing speed, and competition dynamics. This observational study continues until July 2027 and includes adults with normal or corrected vision and hearing.
CONDITIONS
Brief Title
Language Outcomes, Mechanisms, and Trajectories in Adults With and Without Developmental Language Disorder
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Adults with Developmental Language Disorder (DLD) or typical language (TL) between 28 and 40 years who participated in the Iowa Longitudinal Study
- Aged 30 to 35 years
- Normal or corrected to normal vision
- Normal hearing
You will not qualify if you...
- History of brain injury
- History of neural developmental disabilities
- Not monolingual
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - 1 day
Participants complete eye tracking tasks that measure real-time language processing by tracking their eye movements while they perform language-related visual tasks.
1 visit (in-person)
Trial Site Locations
Total: 1 location
1
Wendell Johnson Speech and Hearing Center
Iowa City, Iowa, United States, 52245
Actively Recruiting
Research Team
K
Kristi Hendrickson, PhD
E
Emily Zrostlik, MA
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
2
Similar Trials
Frequently Asked Questions
Have more questions? Get in touch with our team for quick support
Not the Right Trial for You?
Explore thousands of other clinical trials that might be a better match.
Sign up to get personalized trial recommendations delivered to your inbox.
Already have an account? Log in here