Extra Time on Brazilian College Level Exam for Students With and Without ADHD

November 17, 2025 updated by: Hospital de Clinicas de Porto Alegre

Extended Time on Exams as an Accommodation at First Level of Higher Education: A Randomized Controlled Study

Standardized tests such as the Scholastic Aptitude Test (SAT) and the brazilian National High School Exam (ENEM) give more time for students with Attention Deficit and Hyperactivity Disorders (ADHD) to complete the exam. The goal of this study is to find out if giving students with ADHD more time on tests actually helps them. Additionally, the research aims to find out if more time helps students without ADHD too or not, or even if it only helps students with certain traits.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Initially, the participants of this study will fill out forms and questionnaires online. Then, they will go through a psychiatric evaluation, where they will talk to a psychiatrist, and neuropsychological testing, where they will do some mental activities. Later on, they will do a mock test of the ENEM, with and without extra time.

Study Type

Interventional

Enrollment (Actual)

103

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
    • Rio Grande do Sul
      • Porto Alegre, Rio Grande do Sul, Brazil, 90035903
        • Hospital de Clínicas de Porto Alegre

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Brazilian citizen;
  • Planing to participate in college-entry standardized tests (ENEM, Vestibulares);

Exclusion Criteria:

  • Medical condition and/or disability that may hinder the neuropsychological testing;
  • Intelligence Quotient (IQ) lower than 80;
  • Psychotic disorders, bipolar disorders, current moderate or severe depressive episode, suicide risk, autism spectrum disorders, learning disabilities.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: ADHD group
Participants with Attention Deficit Disorder/Hyperactivity (ADHD) diagnosis who will take three equivalent academic exams, having 40 minutes (standard time), 50 minutes (25% increase) and 60 minutes (50% increase) to complete the exam.
Behavioral: Extended time 25%
Considering a standard time of 40 minutes, participants will receive 50 minutes to complete the exam.
Behavioral: Extended time 50%
Considering a standard time of 40 minutes, participants will receive 50 minutes to complete the exam.
Active Comparator: Control group
Participants without Attention Deficit Disorder/Hyperactivity (ADHD) diagnosis who will take three equivalent academic exams, having 40 minutes (standard time), 50 minutes (25% increase) and 60 minutes (50% increase) to complete the exam.
Behavioral: Extended time 25%
Considering a standard time of 40 minutes, participants will receive 50 minutes to complete the exam.
Behavioral: Extended time 50%
Considering a standard time of 40 minutes, participants will receive 50 minutes to complete the exam.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change from Baseline in Test Scores Under Three Time-Limited Testing Conditions.
Time Frame: During a two-hour-and-a-half intervention.
Test performance measured by the proportion of correct answers weighted according to the Item Response Theory.
During a two-hour-and-a-half intervention.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Between-Group Difference in Change from Baseline in Test Scores Under Three Time-Limited Testing Conditions (ADHD vs. Non-ADHD Participants).
Time Frame: During a two-and-a-half-hour intervention.
Test performance measured by the proportion of correct answers weighted according to the Item Response Theory.
During a two-and-a-half-hour intervention.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Hospital de Clinicas de Porto Alegre

Investigators

  • Principal Investigator: Luis Augusto Paim Rohde, PhD, Hospital de Clínicas de Porto Alegre

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 30, 2023

Primary Completion (Actual)

September 18, 2025

Study Completion (Actual)

September 18, 2025

Study Registration Dates

First Submitted

September 18, 2023

First Submitted That Met QC Criteria

September 29, 2023

First Posted (Actual)

October 2, 2023

Study Record Updates

Last Update Posted (Actual)

November 20, 2025

Last Update Submitted That Met QC Criteria

November 17, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2022-0458
  • 64785722.0.0000.5327 (Other Identifier: Ethics Committee - Brazilian Government (CEP/Conep))

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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