If you’re a parent or teacher — or just someone who's witnessed a toddler throw a tantrum in public — you know that children don't always know how to express strong emotions like anger or frustration.

Maybe your child is feeling sad she doesn’t have any classes with her best friend. Maybe she’s feeling anxious before basketball tryouts. Or maybe she’s feeling angry because you’re reinstating screen ...

Ananya Jahanara Kabir is Professor of English Literature at King’s College London. The research underlying this article has been funded by the European Research Council and The British Academy. But ...