Three experiments investigated whether speakers use constituent ordering as a mechanism for avoiding ambiguities. In utterances like ''Jane showed the letter to Mary to her mother,'' alternate orders would avoid the temporary PP-attachment ambiguity (''Jane showed her mother the letter to Mary,'' or ''Jane showed to her mother the letter to…

Traditional syntactic accounts of verb phrase ellipsis (e.g., ''Jason laughed. Sam did [ ] too.'') categorize as ungrammatical many sentences that language users find acceptable (they ''undergenerate''); semantic accounts overgenerate. We propose that a processing theory, together with a syntactic account, does a better job of describing and…