is an excellent science project that has unlimited potential,
and can be a real winner in a science fair. Let your creativity
run with this one! All you need is a computer with software that
can work with image files (e.g., photoshop) and a digital camera.
You can also do this project using a film camera and have access
to a darkroom.
Asymmetric Facial Expressions:
You may not notice it at first, but people have asymmetric facial
expressions. That means their expressions on the left and right
side of the face are not the same. At peak facial expression,
the face is often asymmetric, and the left side of the face in
particular seems to be most expressive. The effect appears even
more pronounced in young and adolescent adult.
a look at the three images below. Only the top is an actual photo!
The other two were generated using data from the first image,
to create an image of two-right faces, and two left faces.
left side image clearly shows a sign of grief that is not
shown in the image that contains two right faces.
can you go from here?
you have a digital camera ask your friends to pose using different
expressions. Make sure you catch your subject straight on for
there a difference in asymmetry between the sexes?
there an age dependent factor?
there any cultural differences?
the effects the same for a real smile as opposed to someone who
is asked to smile? See if you can catch real expressions, perhaps
taking your pictures while your subject is watching television
or involved in a social situation.
the effect go past humans? Do dogs or cats demonstrate asymmetric
there a left -right handed effect? Or, does the left side always
show a more pronounced effect.
out what the reason is behind the effect!
is a wealth of scientific literature about asymmetry in facial
expressions but you will probably have to ask your teacher to
explain some of the more difficult concepts.