| The development of English as a second language B Di Biase, S Kawaguchi, Y Yamaguchi Grammatical development in second languages: Exploring the boundaries of …, 2015 | 53 | 2015 |
| Grammatical development in second languages. Exploring the boundaries of Processability Theory C Bettoni, B Di Biase Lulu. com, 2015 | 41 | 2015 |
| The development of plural marking and plural agreement in child English L2 Y Yamaguchi Research in second language acquisition: Empirical evidence across languages …, 2009 | 26 | 2009 |
| The acquisition of English as a second language by a Japanese primary school child: a longitudinal study from a processability viewpoint Y Yamaguchi PQDT-Global, 2010 | 24 | 2010 |
| Acquisition of English morphology by a Japanese school-aged child: A longitudinal study Y Yamaguchi, S Kawaguchi The Asian EFL Journal Quarterly 16 (1), 89-119, 2014 | 17 | 2014 |
| Child second language learning: A study of English as a second language acquisition Y Yamaguchi (No Title), 2013 | 16 | 2013 |
| Research in second language acquisition: Empirical evidence across languages D Keatinge, JU Keßler Cambridge Scholars Publishing, 2009 | 12 | 2009 |
| Aptitude, task feedback and generalizability of focus on form: A classroom study P Robinson, Y Yamaguchi 12th AILA World Congress, Waseda University, Tokyo, August, 1999 | 12 | 1999 |
| Plural marking in spoken and written narratives: A corpus-based study of Japanese learners of English Y Yamaguchi, H Usami International Journal of Applied Linguistics and English Literature 6 (5 …, 2017 | 8 | 2017 |
| The early syntactic development in child L2 acquisition: What happens after “canonical order” Y Yamaguchi Processability approaches to second language development and second language …, 2008 | 8 | 2008 |
| The acquisition of lexical mapping in English as a second language: A study using two learner corpora Y Yamaguchi, S Kawaguchi Second Language, 29-45, 2022 | 4 | 2022 |
| Early development and relative clause constructions in English as a second language S Kawaguchi, Y Yamaguchi Widening contexts for Processability Theory: Theories and issues 7, 255, 2019 | 4 | 2019 |
| Development of relative clause constructions in english L2 Y Yamaguchi, S Kawaguchi International Journal of Applied Linguistics and English Literature 5 (1), 83-93, 2016 | 4 | 2016 |
| The acquisition of complex structures: The case of child ESL Y Yamaguchi Open Journal of Modern Linguistics 3 (3), 2013, 2013 | 4 | 2013 |
| Developmental Stages and the CEFR Levels in foreign language learners’ speaking and writing Y Yamaguchi Studies in English Language Teaching 7 (1), 1, 2018 | 3 | 2018 |
| L2 Proficiency and L2 Developmental Stages: A Learner Corpus Analysis Y Yamaguchi Studies in English Language Teaching 7 (4), p516, 2019 | 1 | 2019 |
| Testing the validity of Processability Theory through a corpus-based analysis Y Yamaguchi, H Usami Processability and Language Acquisition in the Asia-Pacific Region 9, 280, 2023 | | 2023 |
| Processability Theory, second language learning and teaching in the Asia-Pacific region S Kawaguchi, B Di Biase, Y Yamaguchi Processability and Language Acquisition in the Asia-Pacific Region 9, 1, 2023 | | 2023 |
| Processability and Language Acquisition in the Asia-Pacific Region S Kawaguchi, Y Yamaguchi, B Di Biase Processability and Language Acquisition in the Asia-Pacific Region, 1-317, 2023 | | 2023 |
| Teachability and Learnability across Languages Edited by Ragnar Arntzen, Gisela Håkansson, Arnsterie Hjelde, and Jörg-U. Keßler (2019) Y Yamaguchi Instructed Second Language Acquisition 6 (2), 265–268-265–268, 2022 | | 2022 |
