Léa Nash, Ph.D. (1995), Paris 8 University, is Professor of Linguistics at that university. She has published many articles in theoretical syntax, especially on argument structure, case theory, and ergativity.Pollet Samvelian, Ph.D. (1995), Paris Diderot University, is Professor of Linguistics at Sorbonne Nouvelle University. She has published several books and articles on the syntax and morphology of Iranian languages, especially on complex predicates, bare objects, clitics, and verbal periphrases.Contributors are: Ane Berro, Denis Creissels, Hannah Gibson, Adele E. Goldberg, Lutz Marten, Annie Montaut, Léa Nash, Pooja Paul, Pollet Samvelian, Peter Svenonius (University of Tromsø), Susanne Wurmbrand.