In this study, we conduct a longitudinal experiment to explore the effects of adaptive phonetic training on the identification of the English vowels /i/ and /I/ by learners in China. The vowel /i/ in English has a low F1 value, a high F2 value, and a long duration. In contrast, the vowel /i/ has a high F1 value, a low F2 value, and a short…

Despite the widespread use and effectiveness of the Modern Language Aptitude Test (MLAT) composite score in predicting individual differences in L2 achievement and proficiency, there has been little examination of MLAT subtests, although they have potential for illuminating components of L2 aptitude and the mechanism of prediction. Here we use…

Widespread use of the Modern Language Aptitude Test (MLAT) in L2 studies of individual differences implicitly assumes that L2 aptitude is a distinct cognitive facet. There is considerable evidence for prediction from L1 abilities to L2 learning. In this longitudinal study, L1-MLAT-L2 relations were examined in 307 US secondary students based on…

This study builds upon previous research investigating the construct validity of phraseological complexity as an index of L2 development and proficiency. Whereas previous studies have focused on cross-sectional comparisons of written productions across proficiency levels, the current study compares the "longitudinal" development of…

This book details a three-year, multi-stranded study of teacher education programs that prepare future teachers to work with multilingual learners. The book examines how racism and linguicism collaborate to shape the conditions under which teacher candidates learn how to teach. The analysis traces dynamic shifts in thinking and practice as…

Millions of public-school students in the United States are identified as English language learners (ELLs), whose academic success is tied to their second language (L2) English education. Previous research in adult populations indicates that L2 proficiency is related to the contextual variable of the prevalence of one's first language (L1) among…

Spanish-speaking students constitute the largest subgroup of emergent bilingual (EB) students in the United States. Using longitudinal data on a nationally representative sample of Spanish-English EBs, we explore profiles of English reading trajectories and how early individual differences (i.e., early Spanish reading and English oral proficiency)…

This paper examines evidence for relationships among individual differences (IDs) in L1 achievement, L2 aptitude, and L2 achievement. It begins by providing an overview of my academic journey from L1 educator to L2 researcher and explains the development of the Linguistic Coding Differences Hypothesis (LCDH). Next, I review Peter Skehan's…

The current study examined cognitive effects of two pathways of second language (L2) acquisition longitudinally in Chinese speakers learning English in an L2-dominant environment. Thirty-nine participants who attended an intensive 10-week English course (L2-instruction group) were compared to 38 participants who attended regular university courses…

Background: Many empirical investigations focus on how personality traits and academic motivation are related to academic achievement. Regarding the personality traits described in the five-factor model, prior research has shown associations between openness to experience and language achievement in particular. Following the principle of trait…

Research on assessing English as a foreign language (EFL) development has been growing recently. However, empirical evidence from longitudinal analyses based on substantial samples is still needed. In such settings, tests for measuring language development must meet high standards of test quality such as validity, reliability, and objectivity, as…

Ofsted's 2021 Curriculum Research Review outlines a language pedagogy predicated on an exclusively cognitivist approach to language learning, which relies on three 'pillars of progression': phonics, vocabulary and grammar. The review makes a brief acknowledgement of the importance of motivational factors, including 'pupils' positive views of…

This longitudinal quantitative study examines the first and second language vocabulary development of prekindergarten students enrolled in an inclusive foreign language exploratory (FLEX) program. The FLEX program, framed by the Cognitive Retroactive Hypothesis of cross-linguistic transfer, is situated in a context where students with special…

This longitudinal mixed methods study investigated the relationship between self-reported L1 and L2 willingness to communicate (WTC), observed (actual) L1 and L2 WTC behaviour, and academic achievement, as well as gender differences. Whereas early studies on WTC have focused on examining WTC as a trait, a few later studies have examined WTC as a…

Korean employs case ellipsis (CE), in which nouns are permitted to appear without case markers in certain contexts, particularly in informal settings. Heritage speakers (HS) are typically exposed to informal registers and thus exposed to fewer uses of overt case markers in the input. Given the limited exposure, it is predicted that young HS of…