The things you remember best happened when you were between 15 and 25

Researchers have struggled to understand why the memories that seem to stay with people the most are from the years between their late teens and mid-twenties. But as Chris Moulin, Akira O’Connor and Clare Rathbone write, it may have a lot to do with how our identities are formed

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Does it really pay to be generous?

A new study shows the ‘treat ’em mean, keep ’em keen’ approach may not be the best way to win a popularity contest, Nichola Raihani writes