This project is designed to complete validation research on the Test of Integrated Language and Literacy Skills for identifying whether a student has a primary language impairment or language-based learning disability and to develop profiles of students' language and literacy strengths and weaknesses. Unlike existing measures, the Test of Integrated Language and Literacy Skills will assess both spoken and written language, be curriculum related and inform instruction, be easy and efficient to administer, and reliably and accurately identify students with language difficulties.
Approximately 2000 students throughout the United States will participate. Participants will include students with or at risk for language impairments or language-based learning disabilities, typically developing students, and students with autism spectrum disorder, hearing impairments, or intellectual disability. A series of four studies will be implemented to determine the predictive and criterion validity of the Test of Integrated Language and Literacy Skills and whether the measure produces profiles of students with language or learning problems that deviate from those of their typically developing peers.
The product of this project will be a fully developed and validated assessment of students' language and literacy strengths and weaknesses and technical reports.