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Observational Study on Language Outcomes in Adults with Developmental Language Disorder

This observational study is looking at how Developmental Language Disorder (DLD) affects adults over time. Researchers are studying adults aged 30-35 who previously participated in the Iowa Longitudinal Study, including those with DLD and those with typical language. You would participate in six eye-tracking tasks where you look at images on a computer screen and find specific pictures or say specific words. The main goal is to understand how language abilities develop and change in adults with DLD. The study aims to enroll 400 participants.

Study design
This is an observational study with a planned enrollment of 400 participants. It is not a treatment study, but rather observes language patterns.
What's involved
You would complete six eye-tracking tasks, which are expected to take about 2 hours. These tasks involve looking at images and identifying specific pictures or words.
Compensation
Not stated in the trial record.
Follow-up
Eye movements are measured at 2 hours, which is the stated primary endpoint timeframe.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT06898671

Language Outcomes, Mechanisms, and Trajectories in Adults With and Without Developmental Language Disorder

Recruiting
Not specifiedAges 30–35Observational
University of Iowa
~400 participants
Updated 2025-03-27 on ClinicalTrials.gov
What's tested:Eye-Tracking in Visual World Paradigm

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Eye movements
Measured over 2 hours

Conditions

Developmental Language Disorder

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Developmental language disorderTypical Adult Language

NCT06898671

Where you'd take part

This study runs at 1 site. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Wendell Johnson Speech and Hearing Center

    Iowa City, Iowastudy 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.

Study leadership

  • Stewart McCauley, PhD · PRINCIPAL_INVESTIGATOR · University of Iowa
  • Si On Yoon, PhD · PRINCIPAL_INVESTIGATOR · University of Iowa
  • Philip Combiths, PhD · PRINCIPAL_INVESTIGATOR · University of Iowa
  • J. Bruce Tomblin, PhD · PRINCIPAL_INVESTIGATOR · University of Iowa
  • Jacob Oleson, PhD · PRINCIPAL_INVESTIGATOR · University of Iowa

Who to contact

Kristi Hendrickson, PhD
[email protected]
319-335-8701
Email the study team

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Eligibility criteria

Inclusion

Adults with Developmental Language Disorder (DLD) and those with typical language (TL) between the ages of 28 and 40 years who participated in the Iowa Longitudinal Study(NIH-DC-19-90 \& P50 DC002746; IRB# 200106051, "Collaboration on Specific Language Impairment".)
Aged 30-35
Normal or corrected to normal vision
Normal hearing

Exclusion

history of brain injury
history of neural developmental disabilities
not monolingual

What this trial measures

  • Eye movements2 hours

    Participant are presented with images, and here words referring two one of the images while their eye movements are tracked. We measure the proportion fixations to the target image and distractor images over time. The measurement tool we are using is an eye-tracker (EyeLink portable duo) Note this is BESH, no intervention