The current study set out to examine to what degree age of acquisition (AOA), defined as a learner's first intensive exposure to a second language (L2) environment, mediates the final state of postpubertal, spoken vocabulary attainment. In Study 1, spontaneous speech samples were elicited from experienced Japanese users of English (n = 41) using…

The congruency effect--that is, faster and more accurate processing of congruent multiword units, has been demonstrated in multiple studies. It is still unclear, however, what its underlying mechanism is, and how congruency may interact with other factors. Using an acceptability judgement task, this study examined the congruency effect in…

The current study examines how second language (L2) users differentially assess the comprehensibility (i.e., ease of understanding) of foreign-accented speech according to a range of background variables, including first language (L1) profiles, L2 proficiency, age, experience, familiarity, and metacognition. A total of 110 L2 listeners first…

We investigated age-related decline in adult learning of Dutch as an additional language (Ln) in speaking, writing, listening, and reading proficiency test scores for 56,024 adult immigrants with 50 L1s who came to the Netherlands for study or work. Performance for all four language skills turned out to decline monotonically after an age of…

A number of longitudinal studies of L2 production have reported frequency effects wherein learners' produce more frequent words as a function of time. The current study investigated the spoken output of English L2 learners over a four-month period of time using both native and non-native English speaker frequency norms for both word types and word…

This study investigated the effects of word frequency, collocational frequency, L1 congruency, and L2 proficiency, on L2 collocational processing. Two groups of L1 Japanese speakers of English (intermediate and advanced) and one group of English native speakers (NSs) performed an online acceptability judgment task on four types of adjective-noun…

Examined the development of control over anaphoric reference and relativization by 23 elementary school students learning English as a Second Language (ESL) in a pull-out classroom employing little overt grammar instruction. Results found that second language exposure and proficiency level, rather that age or first language background, had more…

This study compared 112 younger and older adult monolingual English speakers and English/Spanish bilingual speakers on measures of auditory perception and memory span. The results revealed no age difference in auditory memory span in English but found that both older and younger bilinguals performed better than monolinguals on these tasks.…

Reviews the second-language research on age-related differences, drawing conclusions regarding learning-age influence on initial acquisition rate and ultimate attainment level; sensitive periods of language development; cumulative age-related loss in ability; and the adequacy of affective, input, and current cognitive explanations for reduced…