Most right-handed people will choose the bottom picture, with
the smile going up on the left. They are judging the face with
their right hemisphere, if they are looking at the nose as
instructed. In fact, with the focal point as a center, by
tachistoscopic presentation (pictures flashed at one/tenth of
a second), the bottom face always looks happier to right-handed
You can try this here by moving the page up and down fairly
rapidly. At least the effect is very apparent for me, a right-hander.
Force of Value in the Metaphysics of Quality:
This page has been visited times.
Last updated 11/24/98