Research Digest News

> Does sleeping position influence dreams?
> Photographs make a difference
> What children think of people in glasses
> The benefits of family meals are reassessed
> A way of improving eye-witness memory
> When retail sales staff smile everyone wins
> Teens learn music and sports best before bed
> Tipping more common in corrupt societies
> Happiness campaigns could make us sadder
> Pop music is getting progressively sadder
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