Background: The aim of this study was to test the usefulness of the Cognitive and Language scales Bayley-III in the early assessment of cognitive and language functions in the context of an autism spectrum disorder (ASD) diagnosis. This paper focuses on the application of the Bayley-III and studies the predictive value of the test result in…

The Fullerton Longitudinal Study offers a unique opportunity to model the stability of intelligence and achievement and their relations from elementary through secondary school. Using latent variable modeling, we fit a cross-lagged panel model to examine the relations between intelligence and achievement in two academic domains: mathematics and…

Data reported in this paper were collected as part of a larger longitudinal study of the development of young Chicano or Mexican American children and their families. The measures completed by the children included the McCarthy Scales of Children's Abilities, a standardized instrument that measures general intellectual level. The first three…

One of 10 reports in a longitudinal study of Project Head Start submitted by NTS Research Corporation to the Administration for Children, Youth and Families, this document presents the individual testing battery used for the fall 1979 cohort. The first chapter identifies the skill areas to be tested in an analysis of Project Head Start's…