The purpose of this quantitative study was to examine the relationship of language proficiency (WIDA) on the performance of third, fourth, and fifth grade English language learners who were administered the Virginia Standards of Learning (SOL) assessments during the 2017-2018 assessment year. The Virginia Standards of Learning (SOL) reading and…

Student Growth Percentiles (SGPs) increasingly are being used in the United States for inferences about student achievement growth and educator effectiveness. Emerging research has indicated that SGPs estimated from observed test scores have large measurement errors. As such, little is known about "true" SGPs, which are defined in terms…

Age and ethnic group differences in cold weather and contagion or germ theories of infectious disease were explored in two studies. A cold weather theory was frequently invoked to explain colds and to a lesser extent flu but became less prominent with age as children gained command of a germ theory of disease. Explanations of how contact with…