Lexical tone languages like Mandarin Chinese require listeners to discriminate among different pitch patterns. A syllable spoken with a rising pitch (e.g. "b[i-acute]" 'nose') carries a different meaning than the same syllable spoken with a falling pitch (e.g. "b[i with grave]" 'arm'). For native speakers (L1) of a non-tonal…

Despite the growing body of studies on collocation learning in SLA research, there are hardly any studies taking the perspective of the individual learner or studies that have examined the effect of individual differences. This study--a qualitative component of a mixed-methods longitudinal project--presents an in-depth exploration of the intro-…

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 investigated the role of visual short-term memory, working memory, and declarative memory as individual differences in the earliest stages of vocabulary and syntactic learning in "Duolingo"-based language instruction. Thirty-eight L1-Greek adults completed memory tasks and engaged in learning Navajo on…

Guided by Dynamic Systems Theory (DST) and multidimensional perspectives on individual differences (IDs) in instructed second language (L2) learning (e.g., Larsen-Freeman, 2014; Sun & Zhang, 2020), this longitudinal mixed-methods study focuses on three conceptually different categories of L2 learners' IDs: working memory (WM), motivation, and…

Mandarin Chinese verbs are composed of one to four characters that function together as a conceptual unit. However, in modern spoken Chinese, most of these verbs are two-character compounds. This dissertation is focused on adult second language (L2) learners' acquisition of these two-character verb compounds. Specifically, the acquisition of a…

Recent studies of second language (L2) construction learning using artificial linguistic systems have begun to closely examine the role of individual differences, including personality. In such studies, adult participants learn form-meaning mappings after exposure, with scores on generalization tests as a standard criterion for learning. This…

The current study aims to investigate Iranian EFL learners' cognitive styles and their explanations of conceptual metaphors, offering a possible range of individual differences in metaphor processing. 71 participants were asked to explain some established conceptual metaphors that are commonly used in English. Then, their cognitive styles were…

As research into online informal language learning (OILL) develops as a field, the impact on such practices for a wide variety of contexts can be considered. In the case of this publication, the study abroad (SA) context is of particular interest. Indeed the study abroad student may interact with a range of online learning resources in formal,…

This study aims to disclose the Iranian university teachers' perceptions of the fundamentals of language assessment literacy (LAL). To this aim, using purposive sampling, eighteen university teachers from two Iranian universities were invited to participate in semi-structured interviews. Their viewpoints were audio-recorded, transcribed, and…

The focus of this article is on the design and administration of an online computerized dynamic assessment of an important area of pragmatics: implicature comprehension (i.e., indirect meaning). The assessment centered on indirect acceptances, refusals, and opinions. Drawing on Vygotskian psychology, this assessment had a dual aim: (a) to evaluate…

Recent research suggests that psychotypology may be one of the main factors determining L3 acquisition and use, especially so in the early stages. However, the existence and nature of multilingual learners' perception of language proximity have often only been assumed rather than measured, and rarely addressed with respect to the increasingly…

This chapter is dedicated to the presentation and discussion of the results of the empirical investigation undertaken for the purpose of the present book. It concentrates on the outcomes of the in-depth analysis of the patterns of WTC, motivation, boredom and language anxiety, the relationships of these variables as well as the influences shaping…

Although a number of studies have been conducted to explore how various individual difference (ID) factors such as aptitude, motivation, and anxiety contributing to L2 learners' speech performance over a period of time of L2 learning, only a few examined the effect of the three ID factors on learners' L2 speech performances based on classroom…

Willingness to communicate (WTC) used to be studied as a relatively stable, trait-like predisposition; however, recently attention has shifted to the more dynamic, state-like components of WTC. This research investigates variability and stability in state WTC, particularly focusing on within-person variability, which may lead to stable…