Background: Language impairment (LI) in the preschool years is known to vary over time. Stability in the diagnosis of LI may be influenced by children's individual variability, the measurement error of commonly used assessment instruments and the cut-points used to define impairment. Aims: To investigate the agreement between two different…

Assessment is at the center of a decision-making model within a Response to Intervention (RTI) framework. Assessments that can be used for universal screening and progress monitoring in early childhood RTI models are needed that are both psychometrically sound and appropriate to meet developmental needs of young children. The Preschool Early…