This article presents a theoretical review of and methodological guidelines for the study of two key notions in second language acquisition research, complexity and difficulty. The term "complexity" has gained considerable currency over the past decades and has taken on a wide range of meanings. We argue for a more restricted…

Most second language acquisition (SLA) research has documented the processes involved in learning second/foreign languages, with few studies focusing on the durability of attained second language (L2) skills once instructed learners/users are no longer receiving formal instruction. The current study examines the effects of continued exposure and…

Because of authentic exposure, study-abroad sojourners are expected to become more proficient in terms of holistic formulaicity (defined as targetlike language use of intensifiers, fillers, multiword sequences, lexical features, verb-argument constructions, pragmatic and discourse features, and so on), use of formulaic sequences, and lexical…

We tested whether second language (L2) learners rely more on explicit memory during structural priming at lower than at higher proficiency levels (Hartsuiker & Bernolet, 2017). We compared within-L2 priming with lexical overlap in 100 low and 100 high proficiency French L2 speakers under low versus high working memory load conditions induced…

Exploring the underinvestigated area of instruction during study abroad, this article offers a quantitative study of linguistic development among second language university learners of Chinese during a semester in China. A comparison is made between learners following task-based language teaching and a comparison group following a traditional…

This study examined the influence of cognate status and language distance on simultaneous bilingual children's vocabulary acquisition. It aimed to tease apart effects of word-level similarities and language-level similarities, while also exploring the role of individual-level variation in age, exposure, and nontarget language proficiency. Children…

Using computational Social Network Analysis (SNA), this longitudinal study investigates the development of the interaction network and its influence on the second language (L2) gains of a complete cohort of 41 U.S. sojourners enrolled in a 3-month intensive study-abroad Arabic program in Jordan. Unlike extant research, our study focuses on…

Our contribution draws on quantitative data from a longitudinal mixed-methods study to uncover different patterns of social contacts of study abroad (SA) students and the relationship of these social contacts with (a) language use, (b) target language development, and (c) contextual variables. Data were obtained by means of online questionnaires…

This study investigated the relationship of a set of word-combination-based measures of phraseological diversity, sophistication, and complexity to second language (L2) Chinese proficiency and writing quality in comparison to that of a set of large-grained topic-comment-unit-based measures. Our dataset consisted of 101 assessed narratives produced…

This study examined the monitoring abilities of trilinguals in reading comprehension, addressing the following questions: Is comprehension monitoring related to reading comprehension across first, second, and third languages? Is comprehension monitoring shared across the languages of trilingual adults (domain-general) or rather linked to language…

Successful language use requires the ability to process nonadjacent dependencies (NADs) that occur in linguistic input. Learning such structural regularities seems therefore crucial for children, and researchers have indeed proposed that language problems in children with developmental language disorder (DLD), especially problems with grammar, are…

Obtaining quick and reliable evidence regarding the proficiency of learners is a perennial issue in second language (L2) learning research. In this study, we examined naturalistic utterance recall as a measure of L2 learning proficiency that can be easily extracted from videos and automatically scored using the video's captions. In our recall…

We investigated the role of cue weighting, second language (L2) proficiency, and L2 daily exposure in L2 learning of suprasegmentals different from the first language (L1), using eye-tracking. Spanish monolinguals, English-Spanish learners, and Mandarin--Spanish learners saw a paroxytone and an oxytone verb (e.g., "FIRma-firMÓ"…

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…

In this study, we investigated the accuracy of first language (L1) and second language (L2) speakers' intuitive judgments of phrasal frequency and collocation strength, and examined the linguistic influences that give rise to these judgments. L1 and L2 speakers of English judged 180 adjective-noun collocations as (a) high frequency, medium…