Abstract: An apparatus (4) is disclosed adapted to diagnose disorders related to the brain of a subject. The apparatus comprises a display (42) for presenting stimuli to said subject, a microphone (46) for registering a sound signal, and a control unit adapted to measure a pause time until articulation of the subject starts in a said sound signal for naming presented stimuli as quickly as possible and in an order as previously presented. Components of said pause time are analyzed for diagnostic support of neuropsychiatric disorders, in particular neurodevelopmental disorders, or brain damage induced disorders. An adjustment of medication dosage or medication type to individual patient needs may be made based on the measurement.