Learn how QbTest for ADHD assessment measures attention, impulsivity, and activity, how it supports clinical evaluation, and what its limitations are.
QbTest is a computerized continuous performance test that combines a performance task with motion tracking.
During the assessment, the individual responds to specific visual stimuli displayed on a computer screen while an infrared camera tracks movement. The resulting data can provide objective measurements related to attention, impulsivity, and activity.
The test generates results that can be compared with normative data from individuals of a similar age and sex. These results are intended to give clinicians additional information to consider alongside the rest of the ADHD evaluation.
The U.S. Food and Drug Administration (FDA) has cleared QbTest as a device that provides clinicians with objective measurements of hyperactivity, impulsivity, and inattention to aid in the clinical assessment of ADHD. The FDA also specifies that QbTest results should be interpreted by qualified professionals.
QbTest generally involves completing a computerized task while a motion-tracking system records activity.
The specific task can vary depending on the version of QbTest being used and the individual’s age. NICE describes QbTest as a roughly 15- to 20-minute computer-based assessment that combines a continuous performance task with infrared motion tracking.
During the assessment, the individual may be asked to respond to particular visual stimuli while avoiding responses to others.
The system collects information about performance and movement, which can then be presented to the clinician as part of the overall assessment.
QbTest produces objective measurements across different symptom-related areas. The results are compared with normative data and presented in a report that the clinician can interpret alongside other clinical information.
Importantly, the results don’t simply provide a “yes” or “no” ADHD diagnosis.
Instead, they offer another piece of information that may help a clinician understand the individual’s performance and symptoms.
QbTest focuses on three areas commonly associated with ADHD:
The computerized task evaluates aspects of the individual’s ability to respond appropriately to visual stimuli over the course of the test.
The test records response patterns, including responses that may occur when the individual is expected to withhold a response.
The infrared tracking component measures movement during the assessment, providing objective information about physical activity during the task.
These measurements can then be considered alongside clinical interviews, symptom rating scales, developmental history, and other relevant information.
Traditional ADHD assessment relies heavily on clinical interviews, behavioral observations, questionnaires, rating scales, and reports from parents, teachers, or other people familiar with the individual’s behavior.
QbTest can add another source of information by objectively measuring performance and movement during a standardized computerized task.
This doesn’t make the test more important than clinical information. Instead, it gives the clinician another data point to consider when evaluating the overall picture.
One potential advantage of QbTest is that it may help clinicians feel more confident when making an ADHD assessment decision.
A 2025 systematic review found evidence suggesting that adding QbTest may improve clinician confidence and, in some settings, reduce the time required to reach a diagnostic decision. However, the researchers also noted that much of the available evidence involved children and that several studies had important limitations.
Therefore, QbTest should be viewed as a supporting assessment tool, rather than a replacement for professional clinical judgment.
Because QbTest uses a standardized computerized task and compares results with normative data, it can provide measurements that may be useful when reviewing an individual’s performance.
This can be particularly helpful when information from different sources is incomplete, inconsistent, or difficult to interpret.
However, standardized measurements still need to be interpreted within the context of the person’s symptoms, history, and circumstances.
QbTest can also be used at different points during ADHD care to provide objective measurements of changes in performance and activity.
For example, a clinician may compare results obtained before and after an intervention.
Research has investigated QbTest as a tool for monitoring medication response, and a systematic review found that many studies reported changes in QbTest measurements following ADHD medication treatment. However, the evidence base has limitations, and objective test results should not be used in isolation when making treatment decisions.
Perhaps the most important benefit is that QbTest can complement other assessment methods.
ADHD diagnosis requires consideration of more than performance on a single computerized task. Current clinical guidance emphasizes gathering information from multiple sources and considering other conditions that can cause similar symptoms.
QbTest therefore works best when integrated into a broader clinical assessment.
No. This is one of the most important things patients and families should understand about QbTest.
There is no single test that can independently diagnose ADHD. A clinician needs to consider the person’s symptoms, developmental and medical history, functional difficulties, and other relevant information. Other conditions including sleep problems, anxiety, depression, and certain learning or developmental conditions can produce symptoms that overlap with ADHD.
QbTest provides objective information that may support the assessment, but the final clinical decision belongs to a qualified healthcare professional.
QbTest may also be used to provide objective information during ADHD treatment.
A clinician may establish a baseline measurement and later repeat the assessment to observe changes. The results can potentially contribute to discussions about treatment response alongside symptom reports, functional changes, benefits, and side effects.
Research has found evidence of changes in QbTest measurements following ADHD medication treatment. However, the 2025 systematic review found that evidence specifically addressing medication management was relatively limited compared with evidence concerning ADHD assessment, particularly in adults.
For this reason, a change in QbTest results should not automatically be interpreted as proof that a particular medication or dose is right for someone.
Treatment decisions should remain individualized and clinically supervised.
Although QbTest can provide useful information, it has important limitations.
QbTest measures performance during a specific computerized task. ADHD diagnosis requires a much broader understanding of the individual’s symptoms and functioning.
Performance on an attention or activity task can potentially be affected by factors other than ADHD, including sleep, anxiety, motivation, medication, or other health and developmental factors.
This is another reason why clinicians need to interpret the results within the broader clinical picture.
The 2025 systematic review found that much of the existing QbTest research involved children and young people. It also concluded that evidence for medication management and adult populations remains limited and that additional well-designed research is needed.
A person’s lived experience remains an important part of ADHD assessment.
A computerized test cannot independently establish how symptoms affect relationships, school, work, home life, or other areas of functioning.
QbTest may be considered for people who have been referred for an ADHD evaluation or, in some circumstances, for individuals already diagnosed with ADHD who are being monitored during treatment.
The appropriate use of QbTest depends on the patient’s age, clinical circumstances, the healthcare provider’s assessment process, and availability of the technology.
NICE describes QbTest as an aid that can be used alongside standard clinical assessment and, in some circumstances, to help evaluate treatment effects.
Your healthcare provider can determine whether QbTest is appropriate as part of your evaluation.
Completing QbTest is only one part of the assessment process.
After the test, a qualified clinician reviews the results alongside other relevant information. This may include:
The clinician then considers the overall evidence before determining the appropriate next step.
This broader approach is important because ADHD diagnosis is a clinical process rather than the result of a single test.
At Pinnacle Behavioral Healthcare, ADHD assessment is approached as a comprehensive clinical process rather than a single test result.
If you or your child is experiencing persistent difficulties with attention, impulsivity, organization, activity level, or related concerns, a professional evaluation can help determine what may be contributing to those difficulties.
Where appropriate, your provider can discuss available assessment tools, including whether QbTest for ADHD assessment may provide useful additional information as part of the evaluation.
The goal is to develop a clearer understanding of your symptoms and identify appropriate next steps based on your individual circumstances.
No. QbTest is an assessment aid and should be interpreted alongside clinical interviews, symptom information, history, and other relevant evidence. There is no single test that independently diagnoses ADHD.
NICE describes the QbTest as a computer-based task that generally takes approximately 15 to 20 minutes, although the overall appointment may take longer depending on the clinical setting and assessment process
QbTest provides objective measurements related to attention, impulsivity, and physical activity during a computerized performance task.
QbTest technology has versions intended for different age groups. However, research on its clinical impact in adults remains more limited than the evidence available for children and young people.
QbTest has been studied as a potential tool for monitoring treatment response. However, current evidence for medication management is more limited, so QbTest results should be considered alongside symptoms, functioning, benefits, and side effects when treatment decisions are made.
A difference between QbTest results and other clinical information does not automatically confirm or rule out ADHD. The clinician should consider the complete assessment and determine whether additional information or evaluation is needed.
QbTest for ADHD assessment can provide valuable objective information about attention, impulsivity, and activity during a standardized computerized task. However, its greatest value comes from how that information is interpreted alongside the patient’s history, symptoms, observations, and clinical evaluation.
It is not a replacement for professional judgment and it should never be presented as a standalone test that can confirm or rule out ADHD.
If you or your child is experiencing persistent attention, impulsivity, or hyperactivity concerns, a clearer understanding of what you’re experiencing can be the first step toward finding the right support. Pinnacle Behavioral Healthcare can help you take the next step. Contact our team to schedule an ADHD evaluation and learn whether QbTest or other assessment methods may be appropriate for your individual needs.
