It has been widely recognized that a visual impairment can limit an individual's ability to learn through visual observations. This decreased limited visual access which could impact how the skills to access and recognize the world around them develop. However, when the visual impairment was brain-based, such as in Cortical/Cerebral Visual…

The concentration in K-12 education on higher-order thinking has diminished the importance of math fact automaticity, which is the ability to deliver a correct answer immediately from long-term memory without impeding the working memory. This quantitative study investigated the influence of automaticity of high school students on their Missouri…

Within the field of school psychology, the currently accepted structure of intelligence is the Cattell-Horn-Carroll Model (CHC). The CHC model contains three strata of abilities: a general ability (g), multiple broad cognitive abilities, and several narrow abilities (Schneider & McGrew, 2018), although the theoretical salience of the g factor…

The purpose of the retrospective quantitative cohort regression study was to identify predictors of success on the Next Generation National Council Licensure Examination for Registered Nurses (NGN-NCLEX-RN) and determine if changes are needed in the nursing program curriculum. Nurse educators and nursing administration are responsible for aligning…

This convergent parallel mixed methods study with qualitative and quantitative content analysis was conducted to analyze and describe the cognitive complexity of the publicly released Advanced Placement Computer Science Principles Exam questions compared to the language of higher-order thinking found in research literature. Hess' Cognitive Rigor…

This dissertation is guided by my driving research question: what works for whom in education and why? I examine issues of instruction, assessment, and research approaches that begin to answer this question. Study 1 examines a classroom intervention's child x instruction interactions. Study 2 examines underlying cognitive factors, including…

The purpose of this qualitative descriptive study was to explore how end-of-course general education teachers in public high schools (grades 9-12) described cognitive fatigue during the preparation and implementation of standardized testing practices in a Texas urban public school district. Prior to this study, it was not known how Texas public…

The Q-diffusion model is a cognitive process model that considers decision making as an unobservable information accumulation process. Both item and person parameters decide the trace line of the cognitive process, which further decides observed response and response time. Because the likelihood function for the Q-diffusion model is intractable,…

This dissertation aimed to narrow the gap between learning and exercising leadership. It tried to address three main gaps in the field of leadership development assessment as its main research objectives: 1) the measurement gap which concerns the divergence between academic and industry perspectives on leadership development 2) the…

This study examines how large scale assessments like the Scholastic Aptitude Test (SAT), developed for students proficient in academic English, may not produce reliable and valid outcomes for academically vulnerable students, namely English Language Learners (ELLs). This mixed-methods study was conducted to uncover differences between the old and…

This study investigates the effects of four online vocabulary tasks on second language (L2) vocabulary acquisition among learners of different proficiency levels. While tasks are widely used to support L2 vocabulary learning, the efficacy of a task depends on the interplay between task and learner factors. Thus, choosing an appropriate task…

Researchers have investigated the promise of unimodal and bimodal input in enhancing vocabulary learning from meaning-focused activities. Compared to unimodal input, the simultaneous presentation of written and aural input in bimodal input has been argued to direct L2 learners' attention to words and enhance the form-meaning links for new…

This dissertation describes an experiment to investigate how learners with different levels of background in computer science learn core concepts of computer science, in particular, algorithms. We designed a study to focus on cognitive task analysis for eliciting the empirical mental elements of learning two graph algorithms. Cognitive workload…

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…

When you look at an image, what do you see? What does the image say to you? What do you think about? What meaning do you infer? These questions may blur together, but they can be expanded individually and uniquely into a multitude of responses. Your initial thoughts are yours. You are silently debating meaning within yourself. If I interject a new…