Supporting_Information_ed – Supplemental material for How does longitudinal interaction promote second language speech learning? Roles of learner experience and proficiency levels

Supplemental material, Supporting_Information_ed for How does longitudinal interaction promote second language speech learning? Roles of learner experience and proficiency levels by Kazuya Saito, Shungo Suzuki, Tomoko Oyama and Yuka Akiyama in Second Language Research