Jaynes wanted to test which hemisphere was judging the facial expression. Reading direction, apparently, is independent of reading a facial expression. In 1976, as today, research has shown that recognizing facial expressions is primarily a right-hemispheric function.* Jaynes found that 80% of right-handers chose B, while 55% of left-handers chose A, showing that more than half of the latter were using their left hemispheres to read the facial expression. He also thought that if you were completely left-lateralized, left-handed in every way, you would be even more likely to chose A.
- Cross your arms across your chest. Which hand is up?
- If you play a sport, do you use your left or right hand/foot?Walk up stairs. Which foot do you place up first?
- Make a triangle with your index fingers and thumbs together in front of your face. Look at an object in the distance closing each eye alternately. Which eye makes the object appear in the center of the triangle.
- When you write, is your hand position facing up or do you curl in your hand? For example, President Obama sharply curls in his left hand; Clinton writes straight up. How about when you eat? Do you curl in your hand? Sometimes right-handers curl in their hands also, so they are probably right dominant for language. One of my sons, who benefits from my left-handed genes, curls in his right hand when he writes and eats.
* [R]ecent research suggests that the right hemisphere may be best at processing patterns like voice contour, facial expression, aspects of size and quantity, gestalt aspects of the world which, from a developmental perspective, represent the way children begin to learn about cognitive areas like music, art, mathematics or language. This quote is from a great up-to-date article.
** Now a Facebook page called "Right Mind Matters" for all people with enhanced right dominance, whether left-, right-, or mixed handed.