Can children tell us anything we did not know about parameter clustering?
The present paper provides evidence that children are not different from
adults with respect to phrase structure building, a process considered to
be highly dependent on feature valuation. Lexical heads are taken from
the lexicon with open feature values that are specified in the course of the
derivation. Under such a view, linguistic development is mainly restricted
to the lexicon, the projection of functional structure following from the
stepwise identification and valuation of the features encoded by the
morphological markers on lexical items. Based on data from child language,
it is argued that language acquisition consists in choosing the particular
values that correspond to the target language.