Many states now mandate early screening for dyslexia, but vary in how they address these mandates. There is confusion about the nature of screening versus diagnostic assessments, risk versus diagnosis, concurrent versus predictive validity, and inattention to indices of classification accuracy as the basis for determining risk. To help define what…

Purpose: In this article, the authors report reliability and validity evidence for the Dynamic Evaluation of Motor Speech Skill (DEMSS), a new test that uses dynamic assessment to aid in the differential diagnosis of childhood apraxia of speech (CAS). Method: Participants were 81 children between 36 and 79 months of age who were referred to the…

This article describes the Peabody Picture Vocabulary Test-Third Edition, an assessment designed to test preschool children in vocabulary acquisition, screen both for giftedness and mental retardation, and measure English language proficiency in individuals for whom English is not a primary language. Its administration, standardization,…