the form of post-doc scholarship to the second author. We would like to thank the children, their parents and the staff of the nursery schools (Creche M. Teresa Kling do Vale-Director: Alessandra D. do V. Pereira da Silva, and Creche Vila São José-Director: Kátia T.B. Beirão), where some of the tests were conducted as well as the comments obtained during the presentation of the poster. LAPAL: Laboratório de Psicolingüística e Aquisição da Linguagem (www.letras.puc-rio.br/lapal).