I wonder what tests they used for the motor skill development
LBSS,
Now you're creating a strawmen. I never said blacks were better dancers and I never said dumb people were better dancers. I said people thought to be highly intelligent that think a lot generally aren't good dancers (or good athletes). Make a list of the worlds 100 greatest thinkers and its relatively unlikely they were ever tearing it up on the dance floor at any age, with or without practice. Regardless of skin color. The evolution of the human brain particularly with regards to front brain development does help to explain why, if you link that with movement skills.
On another note you would do well to read "Global Bell Curve" by Richard Lynn.
There have been multiple studies showing that young males of west african descent (generally what is referred to in the US as "black") in the US tend to have lower body fat, perform slightly better on sprint and strength tests than their white counterparts etc...
And have better motor skill development at any given age.
