September 6-12

Here's what you missed this week, including peace-loving primates, the end of life, deep depression, and more.

The Deepest Depression

By Sean X. Luo M.D., Ph.D.

Sometimes a Little Help from Our Friends Hurts

By Gwendolyn Seidman Ph.D.

The Psychology of Terrorism

By Steve Taylor Ph.D.

When Jokes Aren't Just Jokes

By Scott Weems Ph.D.

The Mysterious Case of Primate Peacefulness

By Christopher Ryan Ph.D.