Italie (1) Development (1) Children (1) Assaying (1) Communication (1) Terms and phrases (1) Rules (1) Rules (1) Terms and phrases (1) Williams syndrome (1) Towers (1) Speech (1) Signs and symbols (1) Production (Economic theory) (1) Miracles (1) Literacy (1) Linguistics (1) Romanies (1) Down syndrome (1) Conversation (1) Cognition (1) Use (1) Usage (1) Languages (1) Analysis (1) Performances (1) Williams, Síndrome de (1) Conversación (1) Down, Síndrome de (1) Personas con síndrome de Down (1)