Three papers--comments, a reply to comments, and a rejoinder--discussing a conclusion about the nature of general intelligence based on the size loadings of a psychomotor test of discrimination reaction time are presented. The use of Spearman's "g" is the center of the controversy. (TJH)

Originating in the National Survey of Black Americans (NSBA), this book examines this major research project, the first study to sample a truly representative cross section of Blacks in America. The contributors discuss the methodological procedures and approaches used in conducting the NSBA and explain how the study was designed with a…