What makes a child's language development trajectory have the patterns that it has, and what causes differences across children in those patterns? These fundamental questions have for over half a century been at the heart of research on language development in monolingual children, on the cross-linguistic development of language in children from…

The present article investigates the acquisition of the pronominal systems by French and Italian monolingual children and by bilingual German-French and German-Italian children, demonstrating a stable asymmetry: object and reflexive clitics are acquired later than nominative clitics and strong subject and object pronouns. We will widen the scope…

Any person who has taught Spanish as a second language or who has interacted with a non-native speaker of Spanish can easily tell that mastering the correct use of the copulas "ser" and "estar" is very difficult in both spoken and written production. But L2 learners are not alone. The Spanish copulas also present difficulty and frustration for L2…