The Student Background survey administered along with achievement tests in studies of the International Association for the Evaluation of Educational Achievement includes scales of student motivation, competence, and attitudes toward mathematics and science. The scales consist of positively- and negatively keyed items. The current research…

This study compared the underlying factors measured by a state standards-based grade 4 English-Language Arts (ELA) assessment given to several groups of students. The focus of the research was to gather evidence regarding whether or not the tests measured the same construct or constructs for students without disabilities who took the test under…

This study examined the extent to which the underlying factor structure of the 2005 South Carolina Palmetto Achievement Challenge Tests (PACT) in science for grades 3, 4, and 5 was equivalent for students who were administered the test in a regular (standard) or accommodated form. Three accommodation groups were of interest: students who received…

Studied the factorial invariance of scores from male and female students when reading comprehension was assessed with narrative and expository passages related to war and military content. Narrative and expository item factor loadings and intercepts were invariant for both genders, a finding that supports the use of passages about war for reading…

Studied the factorial invariance of a seventh grade reading assessment across groups of 600 general education and 1,128 limited English proficient students. Fit statistics generally supported invariance across all groups for factor loadings and intercepts, but invariance was not supported for the error variances. (SLD)