Comparison (IMAGE) Universit?i Sassari Caption This is an extract of a side-by-side comparison between the human/ANNABELL-system dialogue on one side and the mother/real-child dialogue on the other side, based on the Warren-Leubecker corpus from the CHILDES database (MacWhinney B (2000) The CHILDES Project: Tools for analyzing talk, Lawrence Erlbaum Associates, Mahwah, NJ, 3rd edition). The right side is a transcription of a conversation between a 5-years-and-10-months old child and his mother, extracted from the Warren-Leubecker corpus. Note that the human/ANNABELL dialogue system does not use punctuation, which has been added here for clarity. Credit Bruno Golosio Usage Restrictions Permission for other usage should be asked to PLOS ONE editorial staff. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.