The educational ideology of Developmentally Appropriate Practices (DAP) in childhood education is influential, despite remarkably little empirical study. This article relates DAP to changes in achievement and receptive language among former Head Start children and classmates in Grades 1-3 (including between 1,564 and 4,764 children in 869 to 1,537…

This study compared the abilities of children with specific language impairment (SLI; n=10) and typically developing (TD) children (n=13) to access and participate in an ongoing interaction between two unfamiliar peer partners. Results revealed that all children in the study accessed by either making an unprompted initiation toward their peers…

Austin Independent School District provided full-day prekindergarten to 5,196 4-year-olds in 2008-2009 at 66 schools. Seventy percent or more of students made measureable gains on a test of receptive vocabulary, and average gains showed growth about two times greater than that expected for 4-year-olds after a 7-month period.