The purpose of the study was to evaluate the use of a treatment package comprised of a social story, discrimination training, and differential reinforcement with response cost on the vocal stereotypy of one preschooler diagnosed with an autism spectrum disorder. The study took place in a preschool classroom of a public school and was implemented…

The objective of this study was to evaluate two early intervention packages to promote successful transitions to kindergarten for preschoolers with behavior problems recruited from Head Start preschools. Fifty children (M[subscript age] = 61 months; 76% male; 98% minority) referred by teachers due to early externalizing behavior problems were…

In experimental studies, researchers are often interested in secondary research questions that explore important aspects of main findings, such as whether or not program effects vary according to the level of fidelity in which the program has been implemented; or according to the dosage received by individuals participated in the program. In this…

This paper uses data from the Head Start Impact Study (HSIS), a nationally representative multisite randomized trial, to quantify variation in effects of Head Start during 2002-2003 on children's cognitive and socio-emotional outcomes relative to the effects of other local alternatives, including parent care. We find that (1) treatment and control…

Care Quality Rating and Improvement Systems (QRISs) have advanced and matured, a number of states and localities have undertaken evaluations to validate the systems. Such efforts stem from the desire to ensure that the system is designed and operating in the ways envisioned when the system was established. Given that a central component in a QRIS…

To reemphasize the dangers inherent in the misuse of testing instruments, a study of language and cognitive development in poverty preschoolers investigated 1) whether the interpretation of Peabody scores could be applied to this population, and 2) the contribution of the linguistic form of the Peabody to performance. (MS)