When familiarity leads to false assumptions
One of the most famous illustrations of the curse of knowledge is a 1990 experiment which was conducted at Stanford by a graduate student named Elizabeth Newton. In this study, she asked a group of participants to “tap out” famous songs with their fingers, while another group tried to name the melodies.
When the “tappers” were asked to predict how many of the songs would be recognised by the listeners, they would always overestimate. The “tappers” were so familiar with what they were tapping, they assumed listeners would easily recognize the melody.
These findings have interesting implications. For example, research suggests that sales people who are better informed about their product may be at a disadvantage compared to less-informed sales people.