Gratitude Is a Device to Make You Want to Pay It Forward

David Perry: Gratitude is a device to make us willing todo that. He says it builds these cycles of co operation in amazing ways, in ways that don't seem to make logical sense but feel really rewarding. We're more likely to feel them if i'm sitting next to some one who's anxious, that anxiety can rub off on me. And we've found that when people leave the lab and a stranger comes up to them, they are more willing to help them....