\The purpose of this study was to investigate population invariance of the true-score linking functions with respect to the ability subgroups (i.e., average-achieving students, low-achieving students, and students with learning disabilities). The mean/mean linking functions for five alternate forms of a curriculum-based math problem solving…

Scope and Method of Study: The study investigated the relationship between performance on the Oklahoma State Testing Program (OSTP) for grades 3-7 and the EXPLORE in math and reading for 586 students. The EXPLORE test, a part of the ACT, is given in the eighth grade and provides college readiness benchmarks and a national percentile ranking (NPR)…

The purpose of this ex post facto study was to analyze archive data to investigate the effects of Read 180, a computer-based supplemental reading intervention, on students' academic achievement for the academic school year 2011-2012. Further analyses examined if influences existed in variables such as grade level, gender, and ethnicity of the…

Electricity is regarded as one of the most challenging topics for students at all levels--middle school--college (Cohen, Eylon, & Ganiel, 1983; Belcher & Olbert, 2003; Eylon & Ganiel, 1990; Steinberg et al., 1985). Several researchers have suggested that naive misconceptions about electricity stem from a deep incommensurability (Slotta & Chi,…

This investigation explored relationships between format of text (electronic or print-based) and reading comprehension of adolescent readers. Also in question were potential influences on comprehension from related measures including academic placement of participants, gender, prior knowledge of the content, and overall reading ability. Influences…