This paper examines Raven's Colored Progressive Matrices Scale (CPM) IQ test which is considered by many to be "culture fair." The emphasis is on socioeconomic status but factors of sex and ethnicity are also considered. Two major studies from which socioeconomic status data can be extracted are examined. These and other studies found that children from more affluent backgrounds do better on the CPM than socially disadvantaged children of the the same age groups. On the issue of ethnicity, it was found that, on the whole, white children tested higher. Further, some studies show that boys do better on the test than girls. In comparing CPM to other tests, it was found that paired associative learning tasks may be less socioeconomically biased than the CPM and that CPM correlated highest with the Block Design subtest of the Wechsler Intelligence Scale for children (WISC), a test of abstract spatial thought. Tables are included presenting some of the data and a list of references is appended. (CG)