MIT research scientist Erez Yoeli shares a simple checklist for harnessing the power of reputations to motivate people to act in the interest of others.This talk was filmed at TEDxCambridge. All TEDx events are organized independently by volunteers in the spirit of TED's mission of ideas worth spreading. To learn more about TEDxSHORTS, the TEDx program, or give feedback on this episode, please visit http://go.ted.com/tedxshorts.