This article discusses the conceptualization, measurement, and validity of a recently emerged construct in the field of second language acquisition (SLA)--implicit language aptitude (alternatively "implicit aptitude"). Implicit aptitude is a set of cognitive abilities that enable learners to make unconscious computations of the…

This book traces and summarizes the author's theoretical insights and empirical findings in the field of foreign language education. The volume explores themes such as individual differences in L1 ability and their connection to L2 aptitude and L2 achievement, L2 anxiety as an affective or cognitive variable, and the relationship between L1 and L2…

The concept of constructions has become increasingly important in theories of language acquisition and use during the last 20 years. Constructions are form-meaning pairings that are learned and stored as pieces of linguistic knowledge. Fillmore, Kay, and O'Conner (1988), and Goldberg (1995, 2006, 2019) were among the first linguists who paved the…

Deaf-sighted, deaf-blind, and hearing-sighted people have been interacting within a small community in the Bay Islands of Honduras for over a century (Ali 2023; Ali and Braithwaite 2020). In this article, we sketch the history of the community and the ways in which signers make use of their own and their interlocutor's bodies to co-construct…

Young learners' language aptitude is understudied due to a lack of tests covering this period of life. Young learners, in contrast with adults, are still acquiring their L1. Consequently, a language-dependent aptitude test should be carefully designed for it to be valid. An additional challenge is found when the young learners who are to take the…

This article revisits the role of cognitive individual differences in creating synergies between second language (L2) writing and second language acquisition research that were proposed by Kormos (2012). It takes stock of the advances in research findings, in the past decade, on the role of working memory and language learning aptitude in L2…

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…