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Tiny study questions whether math disorder is really a memory problem

NCT ID NCT03354481

Knowledge-focused Sponsor: Hospices Civils de Lyon Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study looked at whether children with dyscalculia (a math learning disability) have trouble automating counting procedures rather than recalling math facts. Three children aged 8–11 solved simple addition problems over three years while researchers measured their response times. The goal was to see if their counting becomes more automatic over time, which could change how we understand and help with this condition.

What this could mean

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

Active substance
Behavioral intervention: computerized arithmetic and cognitive tasks
What this could lead to
If successful, this could reshape how dyscalculia is understood and treated, focusing on counting automation rather than memory drills.
What could go wrong
This is a very small study (only 3 participants) and is observational, so results may not apply broadly. It aims to test a theory, not provide a treatment.

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

3 people

The number who actually took part.

Started

Jul 2018

Finished

Sep 2019

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

8 to 11 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Age between 8 and 11 years old * Having a dyscalculia as described in the DSM (Diagnostic and Statistical Manual) V Exclusion Criteria: * Presenting a global intellectual deficit

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Conditions

The condition(s) this trial relates to.

dyscalculia

As listed by the trial registrant

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

Dyscalculia

Contacts and locations

Locations

  • Hopital Femme Mère Enfant

    Bron, France

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