Hand-clapping songs improve cognitive and other skills

The first ever study of hand-clapping songs on this planet was conducted by Be Gurion University of Negev. 

Results:  Children who sang hand-clapping songs displayed many skills absent in children who did not bang their hands.  The study also found that those participating in hand-clapping songs "in the yard during recess" have neater handwriting, write better and make fewer spelling errors.

Here's our take on the findings: Those who do not do hand-clapping songs end up becoming doctors, with of course poor handwriting and spelling errors.  There's your trade off.