Emotional-motivational deficits in adults and children with attention-deficit/hyperactivity disorder (ADHD)

Abstract

The endophenotype concept assumes that different dysfunctions underlie the diverse clinical phenotypes of ADHD. Emotional-motivational deficits are considered particularly important in this context. The few available studies relied on subjective data and did not differentiate between clinical subgroups, resulting in heterogeneous findings. The present work therefore aimed to investigate an emotional-motivational endophenotype of ADHD in different clinical subgroups of ADHD patients using subjective and objective psychophysiological data.