What Is QbCheck? The Objective ADHD Test, Explained for Parents

If your child's ADHD evaluation includes something called QbCheck, you may be wondering what it actually is — and whether a computer test can really tell you anything about attention. Here's a plain-language explanation of what QbCheck measures, how it works, what it can't do, and where it fits in a complete evaluation.

What QbCheck Measures

QbCheck is an FDA-cleared computerized test that objectively measures the three core areas of ADHD — attention, impulsivity, and physical activity — at the same time. Instead of relying only on how the behavior is described by adults (which is valuable but subjective), it captures a direct sample of how your child's attention and movement actually behave during a standardized task.

How the Test Actually Works

Your child sits at a computer with a webcam and completes a roughly 15-to-20-minute task — responding to certain shapes on screen and holding back on others. While they work, two things are measured: their responses (how consistently they pay attention, how often they respond impulsively or miss targets) and, through the webcam, their physical movement. It's validated for administration at home, which is part of what makes a rigorous evaluation possible without a trip to a testing center.

What Your Child's Results Mean

QbCheck compares your child's performance to a large group of people the same age and sex, so results are read against what's typical for their developmental stage — not an adult standard. That gives the clinician an objective data point to place alongside the interview and rating scales: does the hard data line up with what parents and teachers are describing, or diverge from it? Both answers are useful.

What QbCheck Can't Do

This is the important part. No single test diagnoses ADHD — not QbCheck, not any other. A computerized measure can't see the whole child: their history, their environment, whether anxiety or sleep or a learning difference is part of the picture. Used alone, an objective test can both miss ADHD and flag attention problems that are really something else. It is one instrument in an orchestra, not a solo.

Where It Fits in a Complete Evaluation

In a real evaluation, QbCheck adds objective performance data to the clinical interview, the parent-and-teacher rating scales, and the screening for look-alike conditions. Its other quiet advantage is that it's repeatable: because it produces a standardized baseline, we can re-test months later and actually see whether therapy or medication is helping, instead of everyone guessing.

What the Research Says

A 2025 mixed-methods systematic review in BMJ Open examined the QbTest family (which includes QbCheck) and found that adding it to an assessment may reduce time to diagnosis, improve clinicians' confidence in the diagnostic decision, and reduce the number of appointments needed — and that patients, parents, and clinicians generally received it well. The authors were appropriately cautious: the evidence base is still limited and more high-quality trials are needed. That mirrors how we use it — as a genuinely useful addition to a thorough evaluation, never as a shortcut around one.

Reference: Tomlinson E, et al. QbTest for ADHD assessment and medication management: a mixed-methods systematic review. BMJ Open 2025;15(4):e095479.

Dr. Kristin Kroll is a licensed psychologist and the founder of Little Dove Psychology, a virtual practice serving children, teens, and college students across Texas and 42 PSYPACT states. Meet the team →