Vocabulary learning is an incremental process. Vocabulary knowledge, especially for second-language learners, may develop across a lifetime. Teachers with experience in providing feedback on their students' vocabulary use in writing or speech might have noticed that it is sometimes difficult to pinpoint one aspect of word knowledge. The reason is…

The purpose of this study was to use differential item functioning (DIF) and latent mixture model analyses to explore factors that explain performance differences on a large-scale mathematics assessment between examinees allowed to use a calculator or who were afforded item presentation accommodations versus those who did not receive the same…

This article presents a methodology for examining the content and nature of item parcels as indicators of a conceptually defined latent construct. An essential component of this methodology is the 2-facet measurement model, which includes items and parcels as facets of construct indicators. The 2-facet model tests assumptions required for…

Discusses the basic concepts of testing and item development and the application of alternative assessments to information literacy content for library instruction. Topics include reliability; validity; statistical analysis; selected response, including checklists, rank order, or simple match; constructed response; essays; and complex assessments.…

Provides a framework for understanding the concept of validity and how it applies to simulation research. Extant tests of validity are discussed in terms of this framework, and a general schema for testing validity is proposed. (MBR)

This project consisted of a meta-analysis of U.S. research published from 1980 to 2004 on the effect of specific science teaching strategies on student achievement. The six phases of the project included study acquisition, study coding, determination of intercoder objectivity, establishing criteria for inclusion of studies, computation of effect…

The reliability and developmental and concurrent validity of the Writing What You Read (WWYR) rubric, designed for use with paper and pen, for hypermedia-authored narrative productions of students in grades 2 and 3 were studied. Sixty students from 4 classrooms produced hypermedia narratives (interactive multimedia presentations) that were rated…

This study investigated the reliability and developmental and concurrent validity of the Writing What You Read (WWYR) rubric, an instrument originally designed for use with paper-and-pen-created narratives, for hypermedia productions of students in grades 2 and 3. Four teachers guided their students in a 3-month-long hypermedia/process writing…