People must choose a well-known song and tap the rhythm on the table. Listeners have to guess the song. The tappers think listeners will guess 50% of the time, when in fact they only guess 2.5% of the time.
Once we know the melody of a song, it is hard to imagine not knowing it.
We believe that concepts that are obvious to us are understood by others.
See the full study here :
Newton, E. L. (1990). The rocky road from actions to intentions. Stanford University.
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