Learning Disabled children (N=198) were tested on both the WISC-R (Wechsler Intelligence Scale for Children-Revised) and K-ABC (Kaufman Assessment Battery for Children). Joint factor analysis produced three-factor and four-factor solutions. Factors corresponding to three K-ABC scales generally converged with three WISC-R factors. (Author/CL)

A conceptual overview of the Regression Discrepancy Model (RDM) for assessing discrepancy between intelligence quotient and achievement scores is offered. Six RDM goals are identified, and figures from a RDM computer output show basic outcomes. Strengths and weaknesses of the RDM are discussed, without the use of complex mathematical descriptions.…