This dissertation explores Spanish copular verbs, "ser" and "estar" (both 'to be' in English), in pre-adjectival contexts within two Spanish varieties: first-language (L1) Chilean speakers from Santiago (N = 29) and second-language (L2) English-speaking learners studying in Chile (N = 31). Bridging sociolinguistics and second…

Over the past decade, the focus of investigation in individual differences (IDs) research has shifted from the utilization of large-scale questionnaire surveys toward the adoption of methodological diversity and development of new approaches to second-language (L2) communication (Dörnyei and Ryan [2015]. "The Psychology of the Language…

This study investigated associations between quality of the teacher-student relationship (closeness and conflict) and teachers' (N = 48) visual focus of attention in Grade 1 classrooms in fall and spring, and it explored to what extent students' (N = 650) gender and task-avoidant behaviour moderated the associations. Results showed first that…

In an increasingly complex world, it is imperative that undergraduate science courses prepare students to make confident, informed decisions and predictions. The research presented in this thesis focuses on supporting students to engage in mechanistic reasoning (MR) about phenomena in chemistry and biology (that is, thinking about how and why…

Middle schoolers with or at risk for emotional and behavioral disorders (EBD) typically have a trajectory of difficult outcomes (e.g., school dropout, incarceration). Growing evidence suggests that the continuum of behavioral competence to challenges is closely linked to students' neurocognitive executive function (EF) capacities, perceived stress…

Understanding rational numbers is a complex task for primary and secondary school students. Previous research has shown that a possible reason is students' tendency to apply the properties of natural numbers (inappropriately) when they are working with rational numbers (a phenomenon called "natural number bias"). Focusing on rational…

Contribution: The study provides empirical evidence and a deeper understanding of COVID-19's impact on first-year engineering (FYE) students' learning experiences and motivation while accounting for gender and race/ethnicity-based variations. Background: In the Spring 2020, the COVID-19 pandemic forced campuses to close and shift unexpectedly to…

Purpose: Children's ability to adjust one's language according to discourse context is important for success in academic settings. This study examined whether second graders vary in linguistic and discourse features depending on discourse contexts, that is, when describing pictures in contextualized (describing the picture to an examiner while…

Purpose: Children's ability to adjust one's language according to discourse context is important for success in academic settings. This study examined whether second graders vary in linguistic and discourse features depending on discourse contexts, that is, when describing pictures in contextualized (describing the picture to an examiner while…

Individual differences (IDs) play an important role in the second language learning process and explain the varied experiences of the L2 learner. The two major IDs, language aptitude and motivation, can be primary factors in one's ultimate proficiency. While language aptitude is largely fixed, motivation is malleable and can aid in overcoming…

This investigation aimed to explore the feasibility of implementing the strategic and interactive signing instruction (SISI) framework and its potential to enhance the signed composition skills of four deaf students in a first/second-grade classroom. SISI was adapted from the existing strategic and interactive writing instruction (SIWI) framework…

Spanish learners engaged in two-way interaction gap tasks where, through social interaction, they identified and defined low-frequency vocabulary. Participants (referred to as actors to differentiate them from task partners) completed two such tasks. Each time, they collaborated with different partners of varying degrees of Spanish proficiency and…

The current study examined differences in morphosyntactic knowledge of Arabic learners who had significant exposure to English as a medium of instruction at the primary and tertiary educational levels. The study involved a grammaticality judgment task, an editing task, and a background questionnaire. Based on the background questionnaire, the…

Purpose: This study examined bilinguals' performance on functional executive function map tasks such as the Zoo Map from the Behavioural Assessment of the Dysexecutive Syndrome and the extent to which working memory, set-shifting, and inhibition measures predicted bilinguals' performance on these tasks. Additionally, we explored the utility of…

According to some accounts, the bilingual advantage is most pronounced in the domain of executive attention rather than inhibition and should therefore be more easily detected in conflict adaptation paradigms than in simple interference paradigms. We tested this idea using two conflict adaptation paradigms, one that elicits a list-wide…