The week in between Christmas and New Year’s is a bit of a time warp. If you’re lucky enough to have the week off from work or school, the days seemingly blend together. Cookies become an acceptable ...

“Find the hidden objects” puzzles seem straightforward enough. How much searching do you really need to do to pick out something totally unique, like a dog, a turtle, or a hat? Well, throw in lots of ...

The work of Jean Piaget shaped our understanding of cognitive development in children, and it also gave us several tasks that we can use to study other animals. One classic issue studied by Piaget is ...