Computer-based cognitive tasks aimed at assessing attention and executive function are used regularly-for both clinical and research purposes-with the belief that they provide an objective assessment of symptoms associated with attention-deficit/hyperactivity disorder (ADHD). As rates of the diagnosis of ADHD appear to be exploding, particularly since the onset of COVID-19,1 there is no doubt as to the need for reliable and valid diagnostic tools for ADHD. One of the most common types of such cognitive tests is continuous performance tasks (CPTs), which putatively not only help in diagnosing ADHD but can differentiate between ADHD subtypes. We urge diagnosticians to take a more cautious approach toward this practice and reconsider how CPTs are used given new evidence.
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