Proxy reporting is a common practice during survey data collection to increase response rates while reducing fieldwork costs, and agreement between proxies and self-reports is critical to make reliable and valid inferences. This study is the first to unpack what influences proxy accuracy in a non-Western setting using data from the 2012 Qatar…

Definitions and associated descriptions of the condition now commonly known as "intellectual disability" serve many functions. The "Atkins v. Virginia" U.S. Supreme Court decision (2002) has called attention to the importance of clear, objective, and measureable wording of the definition. This article discusses the potential for misunderstanding…

The persistent gap between the performance of mainstream students and racially and linguistically diverse students--for example, African Americans, Hispanic Americans, and Native Americans--on standardized tests may well signal problems with procedures for the development and use of standardized tests in general, and for their use with culturally…

Three new indicators of psychometric quality for objectives-based statewide assessments are proposed. These measures provide indication of the stability of reported data on item and objectives mastery, the validity of assessment items for members of various cultural groups, and the convergent validity of prescribed objectives mastery scores. The…

"Data Trends" reports present summaries of research on mental health services for children and adolescents and their families. The article summarized in this "Data Trends" examines the equivalence of the BPI [Behavior Problem Index] across a sample of African American, Hispanic, and non-Hispanic White children drawn from the…

One of the consistent findings of educational research studies is the effect of the students' family socio-economic background on their learning achievement. Consequently, international comparative studies emphasis the role of socio-economic background for determining learning outcomes. In particular, PISA results have been used to describe how…