We compare learning of two inflection types--obligatory noun plurals and optional noun possessives. We tested 107 Hebrew-speaking children aged 6-7 on the same tasks at the beginning and end of first grade. Performance on both constructions improved during this short period, but plurals scored higher from the start, with improvement only in…

Examination of parental responses to their young children's (N=3) inflectional over-regularizations and wh-question auxiliary-verb omission errors suggested that two of the children's parents followed ill-formed utterances with expansions and clarification questions. Such corrective responses dropped out of children's input as they continued to…

Proposes that the optional subject phenomenon in early child language arises because children have not yet acquired the morphological elements (primarily modal and tense) necessary to distinguish subject-taking verbs (e.g., finite verbs) from their non-subject-taking counterparts (e.g., infinitives). (Author/CB)