The bad news is ignoring the work of people is almost as bad as shredding the result of their work in front of their eyes. The good news is simply looking at what somebody has done and scanning it and say “aha” that seems quite sufficient to dramatically improve people’s motivation.
Dan Ariely is an Israeli American professor of psychology and behavioral economics. He teaches at Duke University and is the founder of The Center for Advanced Hindsight. He describes in this TED talks some experiments that have been carried out to investigate the inner mechanics of personal motivation. Thanks to Vincent Ehrhart for sharing this.