This study investigates the second language (L2) acquisition of the English count/mass distinction by speakers of Korean and Mandarin Chinese, with a focus on the semantics of atomicity. It is hypothesized that L1-Korean and L1-Mandarin L2-English learners are influenced by atomicity in the use of the count/mass morphosyntax in English. This hypothesis is tested in two experiments, one comparing Korean and Mandarin speakers in their L2 (English) and the other investigating count/mass morphosyntax in native Korean and Mandarin Chinese. In both experiments, participants are tested on their suppliance of plural marking with count and mass NPs. The findings are fully consistent with the view of atomicity as a semantic universal: learners overuse plural marking with mass atomic nouns such as furniture more than with mass non-atomic nouns such as water. Even though plural marking is associated with atomicity in Korean but not in Mandarin, the same patterns are observed in L1-Korean and L1-Mandarin L2-English learners. We conclude that learners’ performance is not due to L1-transfer, but rather to the role of the semantic universal of atomicity in L2-acquisition.

This study uses both offline and online tasks in order to investigate whether second language learners of English from an article-less first-language (Mandarin) are able to integrate the indefinite article into their grammar despite the lack of articles in their first language. This article reports on two studies, one on learners’ sensitivity to errors of article omission and one on learners’ sensitivity to errors of article misuse. The results indicate that learners show quite native-like sensitivity to errors with articles online, and in fact perform in a more target-like manner in an online task than in a traditional offline judgment task. The findings of this study provide evidence against the Morphological Congruency Hypothesis in that they indicate that learners can represent a new morphological category (in this case, the indefinite article) in their Interlanguage grammar.

The duration of interaction events in a society is a fundamental measure of its collective nature and potentially reflects variability in individual behavior. Here we performed a high-throughput measurement of trophallaxis and face-to-face event durations experienced by a colony of honeybees over their entire lifetimes. The interaction time distribution is heavy-tailed, as previously reported for human face-to-face interactions. We developed a theory of pair interactions that takes into account individual variability and predicts the scaling behavior for both bee and extant human datasets. The individual variability of worker honeybees was nonzero but less than that of humans, possibly reflecting their greater genetic relatedness. Our work shows how individual differences can lead to universal patterns of behavior that transcend species and specific mechanisms for social interactions.

This paper examines whether adult learners of English whose native languages (Korean and Mandarin Chinese) lack articles are influenced by transfer from demonstratives and numerals in their acquisition of English articles. To this end, the results of two studies are reported. The first study examines native Korean and Mandarin speakers’ preferences for bare vs. non-bare (demonstrative or numeral) forms in different types of definite and indefinite environments. The results of this study give rise to specific predictions for L1-Korean and L1-Mandarin L2-English learners’ sensitivity to article omission errors in different types of definite and indefinite contexts in English. These predictions are tested in the second study, which uses both an offline task (grammaticality judgments) and an online task (self-paced reading) to investigate learners’ sensitivity to errors of article omission. L1-Korean and L1-Mandarin L2-English learners are found to behave very similarly when tested in English, despite different preferences exhibited by native speakers of Korean and Mandarin.  It is concluded that learners of these article-less first languages do not transfer the semantics of demonstratives and numerals onto articles in their second language.

This paper examines whether second language (L2)-English learners whose native languages (L1; Korean and Mandarin) lack obligatory plural marking transfer the properties of plural marking from their L1s, and whether transfer is manifested both offline (in a grammaticality judgment task) and online (in a self-paced reading task). The online task tests the predictions of the morphological congruency hypothesis (Jiang 2007), according to which L2 learners have particular difficulty automatically activating the meaning of L2 morphemes that are incongruent with their L1. Experiment 1 tests L2 learners’ sensitivity to errors of –s oversuppliance with mass nouns, while Experiment 2 tests their sensitivity to errors of –s omission with count nouns. The findings show that (a) L2 learners detect errors with nonatomic mass nouns (sunlights) but not atomic ones (furnitures), both offline and online; and (b) L1-Korean L2-English learners are more successful than L1-Mandarin L2-English learners in detecting missing –s with definite plurals (these boat), while the two groups behave similarly with indefinite plurals (many boat). Given that definite plurals require plural marking in Korean but not in Mandarin, the second finding is consistent with L1-transfer. Overall, the findings show that learners are able to overcome morphological incongruency and acquire novel uses of L2 morphemes.