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Is breastfeeding the key to exam success?
We look at a new UK study that links being breastfed as a baby with academic achievement.
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.
Podcast
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More or Less: Behind the Stats
Tim Harford investigates numbers in the news: are they always reliable?
