Hu and Nation's (2000) study, which stipulated that second language (L2) readers need to be familiar with 98% of lexical items for adequate text comprehension, has become highly influential in L2 vocabulary research and pedagogy. However, the 98% critical threshold figure is based on findings from a research project in which a regression analysis…

The "Common European Framework of Reference" (CEFR) is the most widespread reference tool for linking language tests, curricula, and national educational standards to levels of foreign language proficiency in Europe. In spite of this, little is known about how the CEFR levels (A1-C2) relate to empirical learner language(s). This article…

Self-determination theory has been applied in various educational contexts. Language learning researchers have used factor analysis and structural equation modeling to investigate measures designed for this theory, but Rasch analysis has not been conducted. The Basic Psychological Needs Satisfaction and Frustration Scale (BPNSFS) and the Language…

Researchers have linked vivid mental imagery, particularly of the self in future states, to many desirable motivational outcomes for language learning. We report a preregistered conceptual replication and extension of You, Dörnyei, and Csizér (2016), who found a central motivational role for vision. We review essential considerations in structural…

We examined case-marking variation in heritage Polish, Russian, and Ukrainian. Comparing heritage to homeland Polish and Ukrainian speakers, we found only a few types and a few tokens of systematic distinction between heritage and homeland varieties. A total of 6,291 instances of nouns and pronouns were extracted from transcribed conversations…

The current study focused on emergent processes during real-time second language (L2) writing activity in an English as a foreign language university context, examining differences in these processes across individual capacities. Participants included 22 adult Japanese learners of L2 English and their tutor. The data were collected using digital…

This study investigated how standard and substandard varieties of first language (L1) Dutch affect grammatical gender assignments to nouns in second language (L2) German. While German distinguishes between masculine, feminine, and neuter gender, the masculine--feminine distinction has nearly disappeared in Standard Dutch. Many substandard Belgian…

This study investigated whether children born in a second language (L2) environment pronounce their L2 with foreign accents and, if so, when foreign accents first emerge. This study also examined the latest age of onset (AO) of extensive L2 experience at which native L2 pronunciation is possible and explored several factors that affect the degree…

The present study implemented a sign-repetition task at two points in time to hearing adult learners of British Sign Language and explored how each phonological parameter, sign complexity, and iconicity affected sign production over an 11-week (22-hour) instructional period. The results show that training improves articulation accuracy and that…

Taking a dynamic usage-based perspective, this longitudinal case study compares the development of sentence complexity in speaking versus writing in two beginner Taiwanese learners of English (identical twins) in an extensive corpus consisting of 100 oral and 100 written texts of approximately 200 words produced by each twin over 8 months. Three…

Although the significance of age in second language acquisition is one of the most hotly debated issues in the field, very few studies have directly addressed age differences in the language learning process. The present study investigated learning in a foreign-word repetition task. Young Finnish adults and 8-year-olds repeated back Korean words.…

Previous studies show that second language (L2) learners with large phonological memory spans outperform learners with smaller memory spans on tests of L2 grammar. The current study investigated the relationship between phonological memory and L2 grammar in more detail than has been done earlier. Specifically, we asked how phonological memory…

Distributional learning is a proposal for how infants might learn early speech sound categories from acoustic input before they know many words. When categories in the input differ greatly in relative frequency and overlap in acoustic space, research in bilingual development suggests that this affects the course of development. In the present…

This article reports on a mixed-methods study of Chinese university students' knowledge of and attitudes toward plagiarism in English academic writing. A sample of 270 undergraduates from two Chinese universities rated three short English passages under different conditions, provided open-ended responses to justify their ratings, and completed a…

To date, there has been little empirical research exploring the relationship between implicit and explicit lexical knowledge (of collocations). As a first step in addressing this gap, two laboratory experiments were conducted that evaluate different conditions (enriched, enhanced, and decontextualized) under which both adult native speakers…