Jacek Witkoś is Professor of Linguistics at Poznań University (AMU). His interests focus on generative syntax, specifically English-Polish comparative studies. He has authored and edited over seventy publications on such topics as the structure and derivation of infinitives, the distribution of pronominals and the derivation and interpretation of interrogatives. Piotr Cegłowski, Dominika Dziubała-Szrejbrowska and Paulina Łęska focus their research on many aspects of the formal comparative analysis of the syntax and morphology of Polish, including the internal structure of nominal expressions, the coding of topic/focus - related information, double object constructions, as well as syntax processing.