John Nunn learnt to play chess aged four. Since before he can remember, he’s had an exceptional talent for maths. In 1970, aged just 15, he started a degree in mathematics at the University of Oxford.

In this episode of Sideways, Matthew Syed ventures into the world of child prodigies. Often depicted as freakish talents with pushy parents, Matthew uncovers the falsehoods and fascinations associated with young brilliant minds.

Charting John Nunn’s career, from maths lecturer to chess grandmaster, Matthew explores how our performance peaks, plateaus and declines and whether age and innovation are really inextricably linked.

With Dr Ellen Winner, Professor of Psychology at Boston College and Dr Bruce Weinberg, Professor of Economics at Ohio State University.

Presenter: Matthew Syed Producer: Pippa Smith Series Editor: Katherine Godfrey Sound Design and Mix: Rob Speight Theme music by Ioana Selaru A Novel production for BBC Radio 4