Professor Doutor University of Campinas | Institute of Language Studies Teaching and research fields:– Grammar Theory, Syntax, Principles & Parameters– Grammatical variation and change– Syntactic innovations in Brazilian Portuguese Short CV | Lattes | Google Academics | Academia.edu | ResearcherID contact: ornelas@unicamp.br, juanitoavelar@uol.com.br Academic address: Institute of Language Studies – Department of LinguisticsRua Sergio Buarque de Hollanda, 571, CEP 13083-859Campinas, Sao Paulo, Brazil