Used a data analytic strategy that was novel to the M-space literature to examine the mental capacity prerequisites of social-cognitive development of 99 students in grades one, three, and five. Used a structural equations analysis to determine whether M-power was a significant predictor of role-taking development. (RH)

Characteristics of Hispanic students referred for special education services during 1983-84 in several large urban school districts with large minority populations were examined. Also examined was the predictive ability of various statistical models with respect to the eventual diagnostic outcomes of the students. File data were collected for…

Genetic and environmental etiologies of individual differences in tests of intelligence and school achievement were investigated in a study from the Colorado Adoption Project. A multivariate conditional path model was fitted to general cognitive ability and reading performance data from 119 adoptive and 120 nonadoptive families. (SLD)

The logic of using a gain score approach versus longitudinal causal models is studied in this secondary analysis of a complex data base. The gain score model used by the Federal Reserve Bank and the School District of Philadelphia in their "What Works in Reading?" study is successively refined using the LISREL structural equation…