“…The morphosyntactic and phonological determinants mentioned by Veneziano & Sinclair (2000) recur in many other studies of fillers. Fillers act as proto-articles in children acquiring French, German, English and Spanish (Bassano & Eme, 2001 ;Kilani-Schoch & Dressler, 2001 ;Lleo, 2001 a;Lopez-Ornat, 2001 ;Pepinsky, Demuth & Roark, 2001;Peters & Menn, 1993). But they can also target other grammatical categories, such as modal verbs (Kilani-Schoch & Dressler, 2001 ;Peters, 2001 b ;Veneziano & Sinclair, 2000), question words (Dabrowska, 2001) or comparative adverbs and relative clause markers (Feldman & Menn, 2003).…”