Abstract
Over the past few years, research in language acquisition has shifted away from the view that linguistic structures are learned independently of semantic concepts and grammatical functions and toward a more cognitively based perspective (cf. Slobin 1973 ; Clark and Clark 1977). In the latter approach, cognitive principles are assumed to govern the acquisition of linguistic structures, and the earlier autonomous view of language acquisition is replaced by a more catholic attitude encompassing both formal and psychological aspects of language. This perspective is adopted for the analyses presented below.