Dr. Stuart J. Ritchie is a postdoctoral research fellow at the Centre for Cognitive Ageing and Cognitive Epidemiology in the University of Edinburgh's Department of Psychology. His research focuses on how intelligence develops and changes across the lifespan, what might influence it in childhood, and how we might prevent it from declining in later life. His studies of intelligence have been published in journals such as Psychological Science, Current Biology, Child Development, and Intelligence.