A fundamental question in language learning concerns the role of a speaker's first language in second language acquisition. We present a novel methodology for studying this question: analysis of eye-movement patterns in second language reading of free-form text. Using this methodology, we demonstrate for the first time that the native language of English learners can be predicted from their gaze fixations when reading English. We provide analysis of classifier uncertainty and learned features, which indicates that differences in English reading are likely to be rooted in linguistic divergences across native languages. The presented framework complements production studies and offers new ground for advancing research on multilingualism.
Second language reading has been studied using eyetracking, with much of the work focusing on processing of syntactic ambiguities and analysis of specific target word classes such as cognates @cite_10 @cite_16 . In contrast to our work, such studies typically use controlled, rather than free-form sentences. Investigation of global metrics in free-form second language reading was introduced only recently by . This study compared ESL and native reading of a novel by native speakers of Dutch, observing longer sentence reading times, more fixations and shorter saccades in ESL reading. Differently from this study, our work focuses on comparison of reading patterns between different native languages. We also analyze a related, but different metric, namely speed normalized fixation durations on word sequences.
@cite_16 @cite_10
1997990525 2031520010
Second language (L2) researchers are becoming more interested in both L2 learners’ knowledge of the target language and how that knowledge is put to use during real-time language processing. Researchers are therefore beginning to see the importance of combining traditional L2 research methods with those that capture the moment-by-moment interpretation of the target language, such as eye-tracking. The major benefi t of the eye-tracking method is that it can tap into real-time (or online) comprehension processes during the uninterrupted processing of the input, and thus, the data can be compared to those elicited by other, more met alinguistic tasks to offer a broader picture of language acquisition and processing. In this article, we present an overview of the eye-tracking technique and illustrate the method with L2 studies that show how eye-tracking data can be used to (a) investigate language-related topics and (b) inform key debates in the fi elds of L2 acquisition and L2 processing. When hearing or reading words and sentences in a second language (L2), we face many uncertainties about how the people and objects referred to are connected to one another. So what do we do under these conditions of uncertainty? Because relatively proficient L2 speakers have access to the grammar and lexicon of each language when comprehending words and sentences or when planning spoken utterances, and because the recent research suggests that these linguistic systems are not entirely independent, there is a critical question about how the knowledge of two languages affects basic aspects of language processing. In this article, I review how eye-tracking methodology has been used as a tool to address this question. I begin by discussing why eye movements are a useful methodology in language processing research, and I provide a description of one experimental paradigm developed to explore eye movements during reading. Second, I present recent developments in the use of eye tracking to study L2 spoken-language comprehension. I also highlight the importance of using multiple measures of online sentence processing by discussing results obtained using a moving window task and eye-tracking records while L2 speakers read syntactically ambiguous relative clauses. Next, I discuss research investigating syntactic processing when L2 speakers process mixed language. I end with suggestions for future research directions.