ABSTRACT
Universal Grammar, it is often said, consists of principles and a set of option-points or parameters. The literature contains reasonably well-understood parameters that seem to require that children have access to very complex structures. Long-distance anaphors used to be viewed as reflecting a parametrization of binding domains: some grammars would require that anaphors be bound within binding domains that are larger than in other grammars. If parameters are set on the basis of data from unembedded binding domains, it follows that whatever affects embedded domains is a by-product of what is seen in matrix domains. If children are degree-0 learners, one would expect those changes in matrix domains to lead to a new parameter setting, which in aim would lead to new patterns in embedded clauses. An alternative way of construing things, would be to say that degree-0 learners have access to data from unembedded clauses together with their connection points with embedded clauses.
