This study investigated sentence-processing strategies adopted by advanced nonnative speakers (NNSs) and native speakers (NSs) of English in the context of an English structure with which NNSs reportedly have an acquisition difficulty (e.g., Swan & Smith, 2001)—namely, modal perfect (MP). Participants read MP sentences such as He could have worked at the shoe factory and closely related analogous sentences (e.g., He could have work at the shoe factory), and reading times and errors were measured in an online grammaticality-judgment task. It was hypothesized that NSs would have a processing preference for MP sentences compared to the analogues, reflecting the primacy of syntactic information in NS processing and a preference for late closure, whereas NNSs would show no such preference because they rely less on syntactic information when processing sentences. The results revealed, however, that both NSs and NNSs read MP sentences more quickly and with fewer errors than the closely related analogues, consistent with a processing preference for MP sentences. Both groups were also influenced by word-category frequency information, which moderated, but did not fundamentally alter, their syntactic preference for MP. The significance of these findings is discussed in terms of models of second-language sentence processing and NNSs’ reported MP acquisition difficulty.

The current study investigates the limited attainment of adult language acquisition in terms of an associative learning phenomenon whereby earlier learned cues attentionally block those that are experienced later. Short- and long-term blocking are demonstrated in experimental investigations of learned attention in the acquisition of temporal reference in a small set of Latin phrases. In Experiment 1, previous experience with adverbial cues blocks the acquisition of verbal tense morphology, and, in contrast, early experience with tense blocks later learning of adverbs. Experiment 2 demonstrates long-term transfer effects: Native speakers of Chinese languages, which do not exhibit verb tense morphology, fail to acquire inflectional cues when adverbial and verbal cues are equally available.

The identification of stressed syllables by adult second-language (L2) Spanish learners was examined for evidence of influence of an allophonic alternation driven by word position and stress. The Spanish voiced stop-approximant alternation, whereby stops occur in stressed-syllable and word onsets, was utilized. If L2 learners track the distribution of this alternation, they should tend to link stops to stressed syllables in word-onset position and approximants to unstressed, word-medial position. Low- and high-intermediate-level first-language English learners of Spanish as well as native Spanish and monolingual English speakers listened to a series of nonce words and determined which of the two consonant-vowel (CV) syllables they perceived as stressed. In Experiment 1, onset allophone and vowel stress were crossed. In Experiment 2, the onset allophone alternated and a vowel unmarked for prominence was used. The results show that the monolingual English and low-intermediate groups were more likely to perceive syllables with stressed vowels as stressed, regardless of the allophone onset. In contrast, listeners with greater Spanish proficiency performed similarly to native Spanish speakers and were more likely to perceive stress on syllables with stop onsets, a pattern that follows the distributional information of Spanish. This finding suggests that learning the interplay between allophonic distributions and their conditioning factors is possible with experience and that knowledge of this relationship plays a role in the acquisition of L2 allophones.

Most studies that have investigated the effects of instruction on the SLA of specific grammatical features have focused on intentional learning. This study investigated incidental acquisition by comparing the relative effects of two types of instruction—comprehension-based instruction (CBI) and production-based instruction (PBI)—on young Japanese learners’ incidental acquisition of English plural –s. Results showed that both the CBI and PBI groups performed significantly better than the control group on both the comprehension and production tests. There were no statistically significant differences between the two experimental groups. However, a comparison of those learners in the two groups who were complete beginners indicated an advantage for the CBI instruction. A quantitative and qualitative analysis of the interactions in one CBI and one PBI class showed that the students who received both kinds of instruction had ample exposure to plural –s nouns but that the nature of the corrective feedback they received differed. Whereas the feedback that the students in the CBI group received on their comprehension errors enabled them to distinguish the meanings of plural and singular nouns, the feedback that the students in the PBI group received on their production errors—in the form of recasts—did not result in the repair of errors.