This dissertation investigates the problem of how variations in the intensity of three selected constructs--multimedia signaling, speed and pacing, and cognitive engagement prompts--affect attention and learning outcomes in online learning environments. The study explores the intersecting cognitive theories of cognitive load, higher order thinking…

The Next Generation Science Standards propose a multidimensional model of science learning, comprised of Core Disciplinary Ideas, Science and Engineering Practices, and Crosscutting Concepts (NGSS Lead States, 2013). Accordingly, there is a need for student assessment aligned with the new standards. Creating assessments that validly and reliably…

People with acquired brain injury (ABI) present with impairments in working memory and executive functions, and these cognitive deficits contribute to difficulty self-regulating the production of expository writing. Cognitive processes involved in carrying out complex writing tasks include planning, generating text, and reviewing or revising text…

This dissertation examines how district- and school-level leaders' understanding of achievement gaps influences the work of leadership in addressing educational inequities and broadening students' opportunity to learn. While the reporting of disaggregated data by student subgroup confirms that achievement gaps exist, reports from high-stakes…