Size matters - when it comes to lies

A small lie appears trivial but it obviously violates moral commandments. We analyze whether the preference for others’ truth telling is absolute or depends on the size of a lie. In a laboratory experiment we compare punishment for different sizes of lies controlling for the resulting economic harm. We find that people are sensitive to the size of a lie and that this behavioral pattern is driven by honest people. People who lie themselves punish softly in any context.