Tania Ionin is Professor of Linguistics at the University of Illinois at Urbana-Champaign, USA. She is also Associate Editor of Language Acquisition: A Journal of Developmental Linguistics.

Silvina Montrul is Professor of Spanish and Linguistics at the University of Illinois at Urbana-Champaign, USA. She is also Co-Editor of Second Language Research.

Roumyana Slabakova is Professor and Chair of Applied Linguistics at the University of Southampton, UK and Adjunct Research Professor at the Norwegian University of Science and Technology, Norway. She is also Co-Editor of Second Language Research.