Symptom spectra of Auditory Processing Disorder (APD) and ADHD are very similar and there is a statistically significant relationship between measures of ADHD and APD. Therefore it is necessary to investigate, whether or to which degree children with ADHD also suffer from APD.In study 1 we aim to investigate sound segregation in children with and without ADHD using behavioural and psychophysiological methods. Sound segregation refers to the ability to decompose the auditory signal into separate subunits, so-called auditory objects. We would like to know whether a) children with and without ADHD differ from each other already at early, automatic processing stages (bottom-up), b) if sound segregation deficits arise at higher levels of cognitive processing (top-down), and c) if there are differences between ADHD subtypes. Study 2 aims to examine, whether one of the core characteristics of ADHD, behavioural disinhibition, is modality-specific, or if deficits are manifest more dominantly in the visual or the auditory modality.We hope the outcome of these two studies will help us gain knowledge for further diagnostic differentiation of ADHD, and might also lead to the development of alternative treatment programs like sound segregation training.&
