A5059976650- Second Language Learning and Teaching
- Second Language Acquisition and Learning
- EFL/ESL Teaching and Learning
- Radiology practices and education
- Multilingual Education and Policy
- Music History and Culture
- Advanced Causal Inference Techniques
- Phonetics and Phonology Research
- Psychometric Methodologies and Testing
- Student Assessment and Feedback
- AI-based Problem Solving and Planning
- Statistical Methods in Clinical Trials
- Radiation Dose and Imaging
- Spectroscopy and Laser Applications
- Text Readability and Simplification
- Ultrasound in Clinical Applications
- Linguistic Variation and Morphology
- Natural Language Processing Techniques
Michigan State University
2019-2023
University of Illinois Urbana-Champaign
2023
Michigan United
2021
Second language (L2) learners can assess their oral skills with some accuracy. A question is whether reliably use self‐assessment to track gains over time. During the spring of two subsequent years, 80 university L2 Chinese completed an based on NCSSFL‐ACTFL Can‐Do Statements (ACTFL, ) and took computerized Oral Proficiency Interview (OPIc). Results were compared see how accurate self‐assessments determine if students’ improved. Most OPIc reflected in gains; meanwhile, tended underassess...
Abstract Understanding the effects of second language writers’ topic familiarity on their subsequent writing performance has been a subject great interest to researchers in acquisition and TESOL. However, prior studies have tended suffer from multiple methodological limitations (e.g., no interrater reliability, limited or control over important variables), which may call into question results. In this conceptual replication, we highlight some these issues by revisiting an influential study...
This study presents an Acceptability Judgment Task (AJT) conducted with Latinx 1 Spanish-English bilinguals in the United States. We take a social approach to AJT by contextualizing code-switching (CS) within context of reggaetón music adding experimental labels sentences and examine how results vary according enjoyment frequency listening music. Results from mixed-effects regression models show effects sentence grammaticality reggaetón. do not label on CS sentences, however we find higher...
We investigate the distribution and evolution of gas in different theoretical models, including hydrodynamical simulations IllustrisTNG SIMBA, semi-analytical model GAEA, empirical NeutralUniverseMachine (NUM). By comparing predictions for mass function (HIMF) relations, conditional (CHIMF) halo occupation (HOD) galaxies, we find that all models show reasonable agreement with observed HIMF at z∼0. However, differences become much larger higher redshifts z=1 z=2. The NUM shows remarkable...
Observational studies and quasi-experiments are commonplace in applied linguistics. Causal inference based on such a design hinges different assumptions, one of which is commonly referred to as the assumption no unmeasured confounding. To address this assumption, researchers typically consider confounders using regression adjustment methods (i.e., entering into model covariates). Although these theoretically sound procedures, they not without criticism, for instance, regarding potentially...
The factors that influence rater scoring have been a subject of great interest to researchers in second language assessment. However, the research on impact test-takers' speech profiles (e.g., jagged or flat profile reflecting analytic subscores) raters' behaviors remains be seen. To investigate role scoring, we collected and holistic rating scores from 28 trained raters while they were marking performances three groups speakers with distinct profiles, determined by prior ratings. We tracked...
Second-language (L2) testing researchers have explored the relationship between speakers’ overall speaking ability, reflected by holistic scores, and performance on subcomponents, analytic scores (e.g., McNamara, 1990; Sato, 2011). These research studies advanced applied linguists’ understanding of how raters view components effective skills, but authors either used composite instead true ratings, or ran regression analyses with highly correlated subscores, which is problematic. To address...
We investigate the distribution and evolution of HI gas in different theoretical models, including hydro-dynamical simulations (Illustris-TNG SIMBA), semi-analytic models (GAEA), empirical ( NeutralUniverseMachine; NUM). By comparing model predictions for mass function (HIMF), HI-halo HI-stellar relations, conditional (CHIMF) halo occupation (HOD) HI-selected galaxies, we find that all show reasonable agreement with observed HIMF at $z\sim0$, but differences become much larger higher...