Studies that have overcome methodological problems in examining intelligence scores for African-Americans as compared to people of Anglo- Saxon descent revealed:

that the test results were useless because racial prejudice invalidated them.
that African-Americans scored higher in certain areas.
a slight difference between these two groups.
no genetic differences between the two groups
Please help,I chose D.

2 answers

It is hard to tell, since socioeconomic status and education have such a great effect, but I would choose C. Although the mean IQs may differ, the great overlap of scores would make it hard to compare individuals.

I searched Google under the key words "IQ African-Americans white americans" to get these possible sources:

http://www.google.com/search?client=safari&rls=en&q=IQ+African-Americans+white+americans&ie=UTF-8&oe=UTF-8

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
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