This is a 2-part article. In this first part, the most important studies on internal test bias with respect to racial groups in the item-level, subtest-level and construct-level are reviewed. The proposed causes will be discussed. Generally, the most commonly used IQ tests aren’t biased or only minimally biased as to be of no practical value.
The best methodologies with an application using the Wordsum GSS for the Black-White group will be discussed in the second part of the article : (link to the forthcoming article will be provided soon).