い抜き言葉「ている」と「てる」―コーパスを用いた日本語学習者の使用調査

This study quantitatively analyzes the frequency of "te iru/teru" usage among Japanese learners from the perspective of language variation theory, based on the results of previous studies on Japanese L1 speakers. It compares and examines the intrinsic and extrinsic factors influencing the selection of this language variation. Data for the analysis were extracted from the "Cross-Cross Corpus of Multilingual Japanese Learners" (I-JAS). The analysis revealed that Japanese learners do not distinguish between "te iru/teru" in written and spoken language as clearly as Japanese L1 speakers. Furthermore, a positive correlation was found between higher Japanese proficiency and age, indicating a higher rate of "teru" usage. Regarding intrinsic factors, the presence or absence of gemination in verb conjugation had a similar effect as in Japanese L1 speakers. Based on this short note, future research is expected to more thoroughly elucidate the motivations behind the use and non-use of "teru" and deepen our understanding of the language variation acquisition process among Japanese learners.