Andreas Trotzke is Außerplanmäßiger Professor in the Department of Linguistics, University of Konstanz and Research Fellow at the Autonomous University of Barcelona. Trotzke is General Editor of the journal Pedagogical Linguistics. He got his PhD from the University of Freiburg in 2010 and has been a lecturer at the University of Potsdam and a postdoctoral fellow/visiting professor at MIT (2015), UC San Diego (2015), Stanford University (2016-2017), and UPF Barcelona (2018). He has recently been awarded the prestigious International Chair 2017 Empirical Foundations of Linguistics at Université Sorbonne Paris Cité/CNRS. His areas of expertise include the syntax-pragmatics interface, psycholinguistics, and language education.Tanja Kupisch is Full Professor at the Department of Linguistics, University of Konstanz and Professor II at UiT The Arctic University of Norway. She got her PhD from the University of Hamburg in 2006, specializing in bilingual first language acquisition. She has worked as a researcher and teacher at the universities of Calgary, McGill, Hamburg, Lund, Konstanz, and Tromsø, specializing in first, second, and third language acquisition, heritage bilingualism, bilectal acquisition, and language attrition, including child and adult learners. Her work focuses on phenomena such as nominal syntax and foreign accent, including the languages French, Italian, English, German, Turkish, and Russian.