In the master thesis of Sarah Vetsch, the question was raised whether classifiers can be formed on the basis of neurophysiological brain functions, which can separate persons with an attention deficit / hyperactivity disorder from other persons. The data for the formation of the classifier, the so-called ADHD index, were taken from the two-year project “Biomarker-Oriented Diagnostics in ADHD and Comorbidity – Children, Adolescents and Adults” of the Brain and Trauma Foundation Grison.