The acquisition of systematic patterns and exceptions in different languages can be readily examined using the causative construction. Persian allows four types of causative structures, including one productive multiword structure (i.e. the light verb construction). In this study, we examine the development of all four structures in Persian child…

Sentences evoked from three- to five-year-olds (N=16), analyzed for errors (particularly copying-without-deletion), showed errors when: the subject noun phrase (NP) contained a relative clause, the relative clause had an object gap, and the relative clause was long. (Author/CB)