Lia Efstathiadi is a Senior Teaching Fellow at the Department of Theoretical and Applied Linguistics, School of English, Aristotle University of Thessaloniki (AUTH). She holds an M.A. in Theoretical & Applied Linguistics and a Ph.D. in Applied Linguistics from the Department of Theoretical and Applied Linguistics, School of English, AUTH. Since 2010 she has taught the Language Mastery I & II courses (1st year), the Introduction to the Linguistic Research Paper (3rd year) and the Special elective: Variables affecting Second Language Learning (4th year). She takes a particular interest in Second Language Acquisition (Early FL Learning, The role of cognition in FLL), Bilingualism, Content and Language Integrated Learning (CLIL), Modality.