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Inside the toddler brain: how speech therapy rewires late talkers

NCT ID NCT06156865

Knowledge-focused Sponsor: University of Toronto Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study uses brain scans to understand how early language intervention changes the brains of toddlers (18-30 months) who are late talkers. Researchers will scan 45 children before and after a parent-led speech therapy program to see if brain connections linked to learning and memory improve. The goal is to better understand the brain basis of late talking and help design more personalized treatments.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
behavioural intervention (parent-led speech and language therapy)
What this could lead to
If successful, this could help design more personalized early interventions for late-talking toddlers by revealing how their brains respond to therapy.
What could go wrong
This is a small, early-stage study (45 children) focused on brain imaging, not on proving the therapy works. Results may not apply to all late talkers.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 45 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2024

Expected to finish

Jun 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 30 months

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * child and parent are monolingual/native (primarily) English speakers * child is enrolled at one of the participating facilities * child is recruited via word of mouth, including social media * child is between 18 and 30 months of age * child does not have any contraindications to magnetic resonance imaging (i.e., intracranial metal implants, claustrophobia) * child does not have any uncorrected vision challenges Exclusion Criteria: * Child does not meet criteria for LT or typical development * Standard magnetic resonance imaging exclusion criteria * Gestational age less than 37 weeks or greater than 42 weeks * Special education placement of child based on ability or behavior

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Conditions

The condition(s) this trial relates to.

familial developmental dysphasia Language Development Disorders

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Developmental language disorder Language delay Language development

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Grandview Kids

    RECRUITING

    Oshawa, Ontario, L1H0C8, Canada

  • Speech Specialists

    RECRUITING

    Toronto, Ontario, M1X0C3, Canada

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