Categorical data become increasingly ubiquitous in the modern big data era. In this dissertation, we propose novel statistical learning and inference methods for large-scale categorical data, focusing on latent variable models and their applications to psychometrics. In psychometric assessments, the subjects' underlying aptitude often cannot be…

This quantitative study is primarily intended to examine whether district level performance results from Grade 8 ELA state assessments can help to predict future passing rates on AP exams. The participants for the study are all 218 K-12 school districts in New Jersey, all of which generated results across score levels and passing rates for PARCC…

Few studies have systematically investigated the reading skill profiles of English Learners (ELs) in late elementary school, a critical developmental period for language and literacy and the most common grades for initial identification with specific learning disabilities (O'Connor et al., "Learning Disabilities Research & Practice,"…

Few studies have systematically investigated the reading skill profiles of English learners (ELs) in late elementary school, a critical developmental period for language and literacy and the most common grades for initial identification with specific learning disabilities (O'Connor et al., "Learning Disabilities Research & Practice,"…

Background/Context: The landscape of college remediation programs experienced significant shifts from prerequisite models to corequisite models in the past few years across the nation. The traditional prerequisite models required students placed below college level to pass a sequence of remedial courses before they could enroll in college-level…

The Rasch facets model was developed to account for facet data, such as student essays graded by raters, but it accounts for only one kind of rater effect (severity). In practice, raters may exhibit various tendencies such as using middle or extreme scores in their ratings, which is referred to as the rater centrality/extremity response style. To…

Background: With the increasing interdisciplinarity between computer science (CS) and other fields, a growing number of non-CS students are embracing programming. However, there is a gap in research concerning differences in programming learning between CS and non-CS students. Previous studies predominantly relied on outcome-based assessments,…

This study investigates the impact of video game usage on the creativity of students attending Waldorf schools. The research aims to: (1) analyze daily time spent on video games and its influence on creativity levels, (2) explore the effect of devices used for gaming, (3) identify the most popular game genres among students, and (4) assess the…

Ecological factors, such as family involvement and school context, are important to consider in understanding middle schoolers' math development. In this study, we examined the relations of middle school student-reported parental monitoring and school climate as well as school-averaged teacher reports of school organizational health (OH) to…

The purpose of this study was to investigate the association between students' social-emotional behavior and their later academic outcomes from a person-centered perspective. To better inform social-emotional learning intervention practices, a person-centered approach was used to identify students' social-emotional behavior profiles based on seven…

Children can be reliably diagnosed with autism as early as 3 years of age, and early interventions are initiated. There is often a significant gap between the age of onset of symptoms (2-3 years) and diagnosis (8-10 years) in Africa. We conducted a study to validate the Social Communication Questionnaire (SCQ) as a screening instrument in a rural…

Background: South African township learners are known to perform poorly in international tests, including reading and science. Language is a complicating variable as English, the learners' second language (L2), is generally the language of learning and teaching, including for reading science texts. Aim: The study's objectives were to determine the…

This study investigated the value of ACT Composite scores and high school GPA (HSGPA) in predicting first-year college GPA (FYGPA) and degree completion of students with disabilities who took the ACT with accommodations and enrolled at a two-year or four-year public institution in a single state in the southern US. Descriptive analyses found that…

This study examines the influences of demographic, lifestyle and environmental factors on sleep and loneliness problems (SLP) among adolescents in Malaysia. SLP was formed based on the magnitudes of adolescent sleep deprivation and loneliness. Its scores were derived from five responses to two questions related to sleep deprivation and loneliness.…

Cambodian primary schools shifted to remote teaching for extended periods during the 2020-21 COVID-19 pandemic. The results from national learning assessments of grade 6 students show that overall averages in Khmer language and mathematics in 2021 were 0.30-0.75 standard deviations below 2016 levels. There is some evidence that learning gaps…