<qa>  What is the purpose of the present study?The present study aims to evaluate the effects of atomoxetine treatment in patients with ADHD on practical driving abilities which will be assessed with a standardized driving test, a structured one-week driving diary and driving related neuropsychological processing especially different aspects of attention and executive functions which will be assessed with a neuropsychological test battery designed for the assessment of drivers fitness. A functional magnetic resonance imaging fMRI - investigation will also be performed at the beginning and after a 10-week treatment with atomoxetine. The study will be conducted in a single-blind placebo controlled parallel group design in cooperation of the academic Adult ADHD-outpatient clinics of the Central Institute of Mental Health, Mannheim and the Institute of Legal and Traffic Medicine of the University of Heidelberg, Germany. 