This study investigates variations in English short vowel sounds and their correspondences within the context of Southern Thailand, focusing on how these variations may affect intelligibility and comprehensibility in spoken English. It also examines the interplay between speech perception and production, focusing on the impact of mother tongue…

Learners' anxiety has drawn widespread attention in the field of second language/foreign language (L2/FL) teaching and learning (e.g. classroom anxiety, communication (with foreigners) anxiety, and anxiety associated with the four macro-skills, namely listening, reading, speaking, and writing). However, this topic is under-explored in L2/FL public…

This study investigated the relationship among intelligibility, comprehensibility, and accentedness in the speech of second language learners of Spanish of varying proficiency in instructed contexts. It conceptually replicated studies by Munro and Derwing (1995a) and Derwing and Munro (1997), who found partial independence among the three speech…

Many studies evidence the flexibility of speech perception in the first language (L1), which allows rapid adaptation to unfamiliar foreign accents. Two influential studies by Bradlow and Bent (2008) and a follow-up study by Baese-Berk et al. (2013) found that increased variability as a function of the number of talkers and accents facilitated the…

The expansion of the English language produced by non-native speakers has, in recent decades, been discussed by applied linguists from various theoretical perspectives. The discussion has highlighted evidence showing that the multiplicity and diversity of English uses have given rise to an acceleration in the rate of inter-variety contacts where…

Millions engage in learning a Second Language (L2) using their mobile devices with a wide range of success. Concomitantly, there exists a growing interest in research on the effects of mobile-assisted language learning and predictors of learner outcomes (e.g., Loewen et al., 2020; Sudina & Plonsky, 2023). However, few of these apps and studies…

The present study investigated Korean-accented English (KoE) intelligibility and conducted experiments in Korea, Japan, and the USA to test the benefits of listener's familiarity and identify the key phonological features of KoE. In the experiments, the participants were asked to transcribe the target (KoE) of 100 English statements each…

In commercial materials for the teaching of second language (L2) pronunciation, common bottom-up approaches segment phonology into a series of discrete and decontextualized linguistic components with rules that students are encouraged to internalize. Such approaches seem out of step with recent second language acquisition (SLA) theory and research…

Over the past few decades, there has been considerable effort to find the mechanisms through which adult listeners can accommodate the rampant phonetic variation in natural speech. My dissertation concerns one source of variability: phonetic variation in speech produced by individuals with foreign accents. Mounting evidence shows that listeners…