Benedict Carey suggests its the situation, not moral character, that often guides behavior in this New York Times feature “Stumbling Blocks on the Path of Righteousness ”
Most people are adamant: They would never do it. Ever. Never deliberately inflict pain on another person, just to obtain information. Ever artificially inflate the value of some financial product, just to take advantage of others’ ignorance. Certainly never, ever become a deadbeat and accept a government bailout.
In experiments as in life, the holier-than-thou effect diminishes quickly when people have actually had the experience they are judging: dubious accounting practices will appear less shady to the person who has had to put a good face on a failing company. And the effect is apparently less pronounced in cultures that emphasize interdependence over individual achievement, like China and Spain.
Source: New York Times