Before her family drove away, leaving her behind, they tossed her her favorite stuffed monkey out with her. Passersby watched it happen, heartbroken for the sweet dog and her stuffed companion.

In one study, my student Daphna Buchsbaum introduced 3- and 4-year-olds to a stuffed monkey and a musical toy and told them, “It’s Monkey’s birthday, and this is a birthday machine we can ...

The epic stargazing over the canyon? Nope. Their highlight? Winning a stuffed monkey from the claw game at the hotel arcade. After miles of travel, hours of planning, and witnessing one of the ...