During the Root Infinitive (RI) stage children produce both stative and eventive finite verbs, but their non-finite verbs are restricted to eventive predicates (Hoekstra & Hyams, 1998; Wijnen, 1997). This Eventivity Constraint (EC) holds cross-linguistically – for RIs in Dutch, German, French, and Russian, ‘bare perfectives’ in Greek, bare participles (participles without an auxiliary) in Itali...