Samenvatting
In this thesis, divided attention was investigated in four groups of subjects: closed head injury (CHI) patients, young control and healthy older subjects, and older subjects with cognitive impairments. It was studied how diffuse brain injury and normal and abnormal aging affect cognitive processes involved in divided attention tasks. It was also investigated how deficits in divided attention relate to performance of instrumental activities of daily living (IADL), with an emphasis on car driving.