Apart from providing a bird's eye view of a given domain of inquiry (Ioannidis et al., 2015), systematic reviews such as methodological syntheses offer a magnifying glass on prevalent existing problems in primary research and furnish empirically grounded solutions to rectify these issues (Page et al., 2021). As survey research in second language…

Piecewise latent growth modeling (PLGM) is a class of longitudinal models using a structural equation modeling framework to describe stage-like, discontinuous change of individuals over time. PLGM breaks the overall time window into non-overlapped segments where separate functions can be fitted to represent differential growth patterns for each…

The purpose of this study was to investigate the effectiveness of four different models (bifactor, CTC(M-1), CTCU and unidimensional) as to optimal model selection when the wording effect associated with negatively worded items was present. A Monte Carlo simulation study was conducted to compare model-data fit and accuracy in parameter estimates…

This dissertation consists of three manuscripts. The manuscripts contribute to a budding "methodological reform" currently taking place in quantitative second-language (L2) research. In the first manuscript, the researcher describes an empirical investigation on the application of two well-known effect size estimators, eta-squared (eta…

This research explores the emerging field of data science from the scientometric, curricular, and altmetric perspectives and addresses the following six research questions: 1.What are the scientometric features of the data science field? 2.What are the contributing fields to the establishment of data science? 3.What are the major research areas of…

Second language (L2) writing teaching and research in China have enjoyed a rich history and have had remarkable achievements. However, the extensive L2 writing literature created in China has not yet been analyzed comprehensively from theoretical, methodological, and philosophical perspectives. This research synthesis provides a metadisciplinary…

This study highlights a segment of a study that explores the incorporating the social media tools into language learning. These social media tools such as Twitter, Facebook, and Instagram...etc. have become such an intriguing social media that there is a growing need among educationalists, learners, and administrators to explore their impact and…

Special education teachers in California acquire advanced degrees, credentials, and authorizations to serve students with disabilities who are English language learners (SWD-ELLs), yet continue to be challenged to meet the complex instructional needs of these students. Performance on statewide tests of achievement show continued disparities…

In contrast to Early Intensive Behavioral Intervention (EIBI), there are far fewer meta-analyses evaluating Naturalistic Developmental Behavioral Interventions (NDBIs) (Schreibman et al., 2015). Indeed, Pivotal Response Treatment (PRT)--a prominent NDBI--lacks meta-analytic studies. In the context of developing a line of research on the…

This dissertation contains a collection of essays centered on the relationship between theoretical model-building and empirical evidence-gathering in linguistics and related language sciences. The first chapter sets the stage by demonstrating that the subject matter of linguistics is manifold, and contending that discussion of relationships…

"Reclaiming Ga?" is a curious title for readers oblivious to the fact that the meaning of "?a?" has been lost. Indeed, "?a?" is but one of several linguistic signals of Koine Greek that allude the grasp of the modern scholar. This has created an environment within NT studies described here as conjunctive…

The primary concern of this thesis is how we can achieve rigorous testability when we set the properties of the Computational System (hypothesized to be at the center of the language faculty) as our object of inquiry and informant judgments as a tool to construct and/or evaluate our hypotheses concerning the properties of the Computational System.…

The recognition of second language (L2) development as a dynamic process has led to different claims about how language development unfolds, what represents a learner's linguistic system (i.e., interlanguage) at a certain point in time, and how that system changes over time (Verspoor, de Bot, & Lowie, 2011). Responding to de Bot and…

This case study investigates the perspectives of four Taiwanese English ESL (English as a second language) teachers with regard to their participation in an online professional development course. To build a collaborative online professional development community, in which teachers acquire professional knowledge to improve teaching instruction and…

The three structural possibilities marking a noun with an English article are "a," "the," and "Ø" (the absence of an article). Although these structural possibilities are simple, they encode a multitude of semantic and pragmatic functions, and it is these complex form-function interactions that this study explores and…