Highlights: June 23–29

Here are our top picks of the week, including: How children became children, the poker tell you didn't know about, and how to get a stranger's attention.

The True Cause Of Cruelty, Redux

By Alex Lickerman M.D.

Hand Movements Give Your Poker Game Away

By Richard E. Cytowic M.D.

What Should Doctors Do When They Don't Know What to Do?

By Allen J Frances M.D.

6 Ways to Get Me to Email You Back

By Adam Grant Ph.D.

Do Parks Make People Happier?

By Art Markman Ph.D.

When Childhood Was Discovered

By Arthur Dobrin D.S.W.

Are You Introspectively Bi-Curious?

By Jeremy E Sherman Ph.D.

Mo' Money, Mo' Problems

By Samantha Joel