Ian Robertson is Professor of Psychology at Trinity College, Dublin. Formerly a scientist at the MRC Cognition and Brain Sciences Unit in Cambridge, where he was a fellow of Hughes Hall, he is also a visiting professor at University College London with a further appointment in Toronto. One of the world's leading researchers on brain rehabilitation, he has published numerous scholarly books and scientific papers on the subject. He is the author of Mind Sculpture: unleashing your brain's potential and The Mind's Eye, both published by Bantam Press.

Chris Jones, writer-at-large for Esquire magazine, has won two National Magazine Awards. He is the author of Out of Orbit and Falling Hard: A Rookie's Year in Boxing. His work has also appeared in The Best American Magazine Writing and The Best American Sports Writing anthologies. He lives in Ottawa, Canada.