"There is no firm reason to anticipate that the intellectual capacities of peoples geographically separated in their evolution should prove to have evolved identically. Our wanting to reserve equal powers of reason as some universal heritage of humanity will not be enough to make it so."

That is enough to mislead anybody from the media.

"Equal powers of reason" ???

Of course not. People from the same country do not have equal powers of reason. In fact, alot of people act according to their emotion or are motivated by self-gratification, etc. Reason is a learned behavior.

Western logic is not common to all people. The "power of reason" is based on all kinds of environmental factors. What is reasonable behaviour in one country does not make it "reasonable" in another.

I don't know what kind of 'tests' he was referring to but most tests are culturally biased and an IQ test measures only your ability to do well in school. It does not measure your ability to succeed in life. Its a test developed by White folks for white folks and has very little application to anyone else.