Parents learn the hard way that late bedtimes make for cranky kids the next day. But inconsistent bedtimes may have a greater effect on children's behavior, a study says. Kids who didn't go to bed on ...

A simple model of random copying among individuals, similar to the population genetic model of random drift, can predict the variability in the popularity of cultural variants. Here, we show that ...

Dog breed choice is one of those subtle class markers that people don't talk about but everyone unconsciously recognizes.