Modern transformational grammarians, using only their own intuitions as the basic data for the rule construction, may not be analyzing the common, natural language of the speech community. Do native speakers share the intuitions of linguists? One hundred and fifty exemplar sentences from six linguists' articles were presented to forty-three linguistically naïve and twenty-two linguistically non-naïve native speakers. Native speakers agreed among themselves as to the acceptability or unacceptability of eighty per