The QbCheck.

The QbCheck is an online test developed by Qbtech, a company that has spent more than twenty years doing one thing: measuring ADHD objectively.

You complete it at home, on a computer with a webcam, at a time that suits you, guided step by step. Shapes appear on the screen one after another, and you respond to particular ones with a button press. It takes around fifteen to twenty minutes. While you work, the webcam quietly tracks your movement.

That simple task measures the three core areas of ADHD directly: attention, impulsivity and activity. Your results are then compared with data from people of the same age and sex who do not have ADHD, so we can see exactly where you sit rather than guessing.

Almost everything else in an ADHD assessment comes from people. What you remember, what you have noticed, what someone who knows you well has seen, what I observe when we meet. That information is essential, and gathering it carefully is most of the craft. But it is human information. Memory is imperfect, people differ enormously in how they describe themselves, and some have spent decades masking the very things we are looking for.

The QbCheck does not listen to anybody. It measures what you actually did, second by second, and sets it against people of the same age and sex. It cannot be swayed by how articulate you are, how modest you are, or what kind of day you are having.

That cuts both ways, which is exactly the point. Objective data can support what the interviews suggest, and it can challenge them. Either way, the conclusion you receive rests on more than opinion, and that is what lets people trust it, whichever way it lands.