The Quantitative Behaviour Check is a computer-based assessment tool for 6-60 year olds. It provides a way of measuring the core ADHD symptoms of inattention, hyperactivity and impulsivity. It is built on the well-documented and tested technology of the QB Test which has an established database of 250,000 patient tests and has both FDA approval and is a certified medical device in the UK. In a recent study performed by the Academic Health Science Network on 40,000 children undergoing NHS ADHD assessment it was found to add value by using it early in the diagnostic process to reduce the time and number of appointments to diagnosis and to increase service user and clinician satisfaction with the diagnostic process.
Nearly all private child psychiatrists now perform a QB check as part of their assessment for ADHD. It can also be useful as part of an adult ADHD assessment.
The Cambridge ADHD Centre can offer standalone QB Checks which are produced with a written report. This can be a useful method of screening for ADHD.
It is essential to understand that a QB Check alone does not provide a diagnosis of ADHD - it serves as a useful screen and can form part of a comprehensive assessment.
During the test, the patient is asked to respond as quickly and accurately as possible to a series of images presented on the screen by clicking the space bar when appropriate. The webcam tracks movement. The results of the test are available within a few minutes and are compared with the QB database of subjects with and without ADHD.