Rab Houston is Professor of Early Modern History at the University of St Andrews. He has extensive research experience in the social history of Britain and Europe in the early modern period. Best known for his work on seventeenth and eighteenth-century Scotland, his published books include Madness and Society in Eighteenth-Century Scotland.

Uta Frith is a Professor of Cognitive Development at University College of London and Deputy Director of the Institute of Cognitive Neuroscience at the University College of London. She has pioneered investigations into the mind of the individual with autism and has a keen interest in the impact of the disorder on both sufferer and carers. Her book, Autism: Explaining the Enigma has been translated into many languages.