The research presented in this dissertation describes a series of studies characterizing and assessing undergraduate chemistry students' knowledge related to the epistemic nature of scientific models and modeling. Engaging in authentic scientific practices, for instance, developing and using scientific models, has been identified as an important…

This quantitative correlational non-experimental study examined the predictable relationship between the ACCESS for English Language Learners scale score and the Georgia Milestones English Language Arts (GMAS-ELA) standardized assessment for reclassified fifth-grade English language learners during the 2018-2019 school year. The problem addressed…

Large-scale assessments, a prominent part of education in the United States, are the accountability measures used to determine policies, programs, and the allocation of resources. The U.S. school population continues to have an increasing number of culturally and linguistically diverse (CLD) students, indicating the need to reevaluate the…

This case study discusses an investigation to develop and validate a survey designed to obtain information on practitioner self-reported knowledge, use, and perceived effectiveness of recommended classroom-based practices for the inclusive instruction of students receiving special education services for Emotional Disturbance. First, students will…

Previous research has suggested that African American children are more equipped to close the achievement gap when enrolled in mainstream schools than in culturally familiar schools. However, this study seeks to determine if there are benefits to attending a culturally familiar school. This study explored test score performance difference of 393…

This study addresses the development and evaluation of the Physics Problem-Solving Taxonomy (PPST), comprising five levels: retrieval, diagnosis, strategy, conceptual, and creative thinking. The taxonomy draws on Bloom's revised taxonomy in the cognitive domain, the Types of Knowledge Taxonomy, and the Problem-Solving Taxonomy in engineering. The…

In 2015, the "Programme for International Student Assessment" (PISA) introduced multiple changes in its study design, the most extensive being the transition from paper- to computer-based assessment. We investigated the differences between German students' text responses to eight reading items from the paper-based study in 2012 to text…

While autism spectrum disorder screening tools provide a useful resource for practitioners, the reality is they are underused. The justifications often provided include the time required for administration and the training involved. A brief tool with good psychometric properties that require minimal training is required. This study examined the…

Community colleges often employ measures to determine student course placement. Though much research has examined the predictive validity of placement measures such as ACT or high-school GPA, little research examines the effects of students' traditional and non-traditional status. Using data from a rural state community college, we examined the…

Test-taking behavior is a potential source of construct irrelevant variance for test scores in international large-scale assessments where test-taking effort, motivation, and behaviors in general tend to be confounded with test scores. In an attempt to disentangle this relationship and gain further insight into examinees' test-taking processes,…

A secondary analysis of PISA 2018 data was conducted to investigate the reading achievement of students with an immigrant background. While prior research suggests the importance of demographic characteristics in secondary PISA analyses, a major critique is that PISA centers destination characteristics over origin ones, limiting the study of the…

Background: Researchers regularly must decide what information is necessary to understand school climate and how to include climate in a study. For example, which factors and/or scales should be used, is using just 1 scale for school climate sufficient, and to what extent does the selection of a single scale influence the research findings? Aims:…

Background: Researchers regularly must decide what information is necessary to understand school climate and how to include climate in a study. For example, which factors and/or scales should be used, is using just 1 scale for school climate sufficient, and to what extent does the selection of a single scale influence the research findings? Aims:…

The purpose of this study was to compare the effectiveness of interdependent and independent group contingencies on pre-service teachers' performance on class quizzes that reflected their knowledge of evidence-based practices for students with extensive support needs. In the interdependent condition, the course instructor awarded extra credit…

Dual-language books' (DLBs) two-language format could support biliteracy development, but little is known about how children read them. Fifty-four third and fifth graders read aloud DLBs with English or Spanish first on each page to determine DLBs' potential affordances. Although there were no significant differences in oral reading fluency or…