The Probable and the Tentative
Cromwell, addressing the Long Parliament, gave good advice when he said: "I beseech you in the bowels of Christ to consider whether or not you may be mistaken." Before drawing implications, prudence dictates a review of our key estimates and distinctions. These include estimates of the mean IQs of Chinese and Japanese Americans, the classification of tests as IQ or achievement, estimates of the IQ/occupational achievement gaps, and partitioning those gaps into threshold and capitalization factors.
Here I feel a tension between truth and dialectic. The fact that so many studies require adjustment is bound to arouse skepticism and it would have been good tactics to err on the side of higher values for the mean IQ of Chinese and Japanese Americans. But in doing this, there is the danger of not telling the truth as you see it. I have tried to adjust all studies as fairly as possible. However, I now want to show that alternative adjustments would not in fact push values much higher and answer points raised by various critics. The best format is to divide the literature into the Coleman Report and a collection of all studies other than the Coleman Report.