Do survivors of traumatic events share certain traits?

'I closed my eyes ... and waited to die'
Deborah Scaling Kiley remembers the screams, the sight of water turning red as sharks devoured a man who had been with her as their yacht sank. But she lived. And so did Ma Yuanjiang who drank urine and ate paper as he lay buried in earthquake rubble for a week. These and other survivors share certain traits, a researcher says. full story