As we wrapped up our five-day jaunt in a cozy extended-stay just inside Scottsdale suburbia I was on the verge of mental and physical collapse, whereas the boys, as the Energizer Bunny proffered, just kept going and going and going. I couldn't keep up. In fact I didn't. Their enthusiasm met my exhaustion. I raised my voice at the boys, and in an instant, their elation turned to fear and shame.
Scientists argue that our brains have adopted a defense mechanism called the 'negativity bias' to help us avoid danger or avoid repeating past blunders.








