Speech is extremely variable along many different dimensions. One source of variability listeners often encounter is accented speech, in which phonological units can systematically differ from the listener's native categories. This dissertation presents five experiments testing how listeners adapt to accent-based phonological variability,…

This study examines L2 speakers' accent attitudes in relation to their linguistic profile and current practices, recruiting 107 multilingual postgraduate students of 34 different nationalities enrolled in leading research universities in Japan. The participants completed a survey regarding their perceptions of different English varieties in…

The rapid spread of English medium instruction (EMI) across the globe has led to a growing number of non-native lecturers teaching in English to student populations that are increasingly international. The aim of the present study was to investigate to what extent lecturers with slight or moderate Dutch accents or native British English accents…

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…

Native English speakers' accents are generally regarded as ideal models of English accents. However, in real-world communication, where English is used as a lingua franca for intercultural communication among people from diverse linguistic and cultural backgrounds, English users inevitably encounter a wide variety of accents. This paper presents…

Intelligibility is a critically important aspect for effective oral communication. This study explored salient (important) pronunciation errors and their relative roles in the intelligibility of nonnative speech based on listener judgments. Speech samples, collected from speakers with a Turkish as a native language (L1) background, were presented…

The study explores the attitudes of undergraduate Flagship students in the United States towards Arabic-accented speech in English. It examines the Familiarity Principle among these students and analyzes their attitudes based on socio-intellectual status, aesthetic quality, and dynamism of Arabic-accented speech. The study also discusses the…

This paper extends the use of Generalizability Theory to the measurement of extemporaneous L2 speech through the lens of speech perception. Using six datasets of previous studies, it reports on "G studies"--a method of breaking down measurement variance--and "D studies"--a predictive study of the impact on reliability when…

This study investigated L2 Korean speakers' self-assessment of speech comprehensibility and accentedness, including a conceptual replication of Trofimovich, Isaacs, Kennedy, Saito, and Crowther (2016, Experiment 1) and exploratory analyses of individual differences in self-assessment. L2 Korean speakers (N = 198) self-assessed their…

Growing evidence suggests that auditory processing ability may be a crucial determinant of language learning, including adult second language (L2) speech learning. The current study tested 47 Chinese English-as-a-Foreign-Language students to examine the extent to which two types of auditory processing, i.e., perceptual acuity and audio-motor…

Comprehensibility has emerged as a useful and intuitive means of globally evaluating second language (L2) speakers in many research and instructional contexts. In most cases, L2 speakers' comprehensibility is assessed by external listeners who do not engage in extensive communication with the speakers, even though the degree to which a speaker is…

The global spread of English nowadays has led to a shifted role in the use of English as an international lingua franca in expanding-circle contexts like Thailand. The purpose of this study was therefore to examine Thai university students' attitudes towards their own Thai-English accent, in addition to how the notion of standard language ideology…

Speaking anxiety is a form of foreign language anxiety which may reduce students' willingness to communicate orally. Despite accent being one of the most salient aspects of speech, there has been little research to date on the relationship between non-native accent and speaking anxiety. The purpose of this study is therefore to examine English…

The shift to online instruction brought about by the novel coronavirus exacerbated language teaching and learning constraints already highlighted by foreign language (FL) research. However, it is important that FL courses keep preparing learners for global careers and interactions with native speakers--whether courses take place in-person,…

Whereas many scholars have emphasized the relative importance of "comprehensibility" as an ecologically valid goal for L2 speech training, testing, and development, eliciting listeners' judgments is time-consuming. Following calls for research on more efficient L2 speech rating methods in applied linguistics, and growing attention toward…