Cognitive diagnostic models (CDMs) are a family of psychometric models designed to provide categorical classifications for multiple latent attributes. CDMs provide more granular evidence than other psychometric models and have potential for guiding teaching and learning decisions in the classroom. However, CDMs have primarily been conducted using…

This research was triggered by the identified need in literature for large-scale studies about the kinds of designs that teachers create for mobile learning (m-learning). These studies require analyses of large datasets of learning designs. The common approach followed by researchers when analyzing designs has been to manually classify them…

This study aimed at comparing the effect of two test item formats (multiple-choice and complete) on estimating person's ability, item parameters and the test information function (TIF).To achieve the aim of the study, two format of mathematics(1) test have been created: multiple-choice and complete, In its final format consisted of (31) items. The…

Recently, we saw a forced transition in educational practice from traditional methods to online and virtual learning as higher education, along with nearly all aspects of society, was disrupted due to the COVID-19 pandemic. As many of us have returned to face-to-face instruction, questions remain regarding modes of instruction and what forms of…

During the COVID-19 pandemic, school closures have brought significant disruptions to education throughout the world. This pandemic has affected the mental state of teachers from having to adapt to provide online classes. Teacher resilience refers to the capacity of teachers to survive and thrive in extremely adverse circumstances and sustain…

Adaptive learning (AL) courseware holds promise for helping break down challenges students face in college. In 2016-2017 we developed an AL Political Science course, Global Issues, implemented it across 51 classes and more than 5,200 students over the next two academic years, and initiated a study to assess student perceptions and performance. In…

Private religious schools are widely seen as value-laden communities that mold the character of their students. Thus, we expect adults who attended religious schools as children to demonstrate more favorable family outcomes related to stable marriages and childbearing. We further expect Protestant schooling to have a more powerful effect on…

The problem is staff fear being involved in the next campus shooting, which has pushed campus safety experts to update safety policies and procedures. One of the policies being addressed is the option of allowing concealed carry on campus (CCOC). However, allowing CCOC makes some staff feel less safe. The purpose of this causal-comparative study…

Ethical decision-making and ethical behavior are an essential focus of training for students who wish to pursue careers in behavior analysis. In addition to education and training mandates by the Behavior Analyst Certification Board, universities that offer a Verified Course Sequence are required to teach and maintain ethical behavior in students.…

Analysis of consistent Zearn Math users and a comparable group of non-users in District of Columbia Public Schools (DCPS) shows that students who used Zearn Math consistently had higher levels of academic growth than similar students with low- or no-usage. This analysis used two quasi-experimental methods, Coarsened Exact Matching (CEM) and fixed…

Causal inference regarding a hypothesized mediation mechanism relies on the assumptions that there are no omitted pretreatment confounders (i.e., confounders preceding the treatment) of the treatment-mediator, treatment-outcome, and mediator-outcome relationships, and there are no posttreatment confounders (i.e., confounders affected by the…

Educational video games can engage students in authentic STEM practices, which often involve visual representations. Specifically, because most interactions within video games are mediated through visual representations, video games provide opportunities for students to experience disciplinary practices with visuals. However, prior research has…

This study examined the extent of perspective taking and language features represented in secondary students' text-based analytical writing. We investigated (1) whether perspective taking is related to writing quality, accounting for language features in writing; (2) whether students' English learner status is related to perspectives represented…

The present dissertation explores the effect of exposure to non-native speech via foreign film on non-native speech production and perception. In order to explore potential effects, two main experiments were developed, which examined French production and perception by monolingual native speakers of English before and after exposure to French…

The present study explored perceptual and articulatory techniques addressing the pronunciation of Spanish rhotics by means of a week-long computerized training. Through a quasi-experimental design approach, the study tested the utility of the online training and its effects on the phonetic production of taps [voiced alveolar tap or flap] and…