Is breastfeeding the key to exam success?

Available for over a year

A new study by researchers at Oxford University has linked better exam results at school with being breastfed as a baby. But how much faith can we put in the findings? Tim Harford speaks to Emily Oster, professor of economics at Brown University in the US and the author of three books about pregnancy and parenting. Presenter: Tim Harford Producer: Jon Bithrey Editor: Richard Vadon Production Co-ordinator: Brenda Brown Sound Engineers: Graham Puddifoot, James Beard