Dag Aarsland is head of the Centre for Healthy Brain Ageing, the department of psychological medicine and the Institute of Psychiatry, Psychology and Neuroscience at King’s College London (KCL). He is also research director at the Centre for Age-Related Medicine, Stavanger University Hospital. His main research interest is the neuropsychiatric aspects of neurodegenerative diseases, with particular focus on translational studies of cognitive decline in Parkinson’s disease (PD) and dementia with Lewy bodies (DLB). Dr. Aarsland has led several national and international multicenter research projects: he is principal investigator of the European DLB Consortium, joint lead for the NIHR HealthTech Research Centre for Brain Health, past chair of the ISTAART Professional Interest Group for Lewy body dementias and dementia-theme lead of the Maudsley Biomedical Research Centre at KCL. He is also a member of the PPMI cognitive behavioral working group and the NINDS PD common data elements working group.