Emmanuel Chemla from the Institut Jean Nicod and the Laboratory of Cognitive Science and Psycholinguistics at the École Normale Supérieure in Paris will deliver the second of three lectures on October 22 from 4:00 to 5:30 in N400. His talk is entitled "Concepts in a lexicon: Learning homophony. Innateness and Bayesianism.” it presents joint work with Isabelle Dautriche. The lecture is in conjunction with Alejandro Pérez-Carballo’s and Vincent Homer’s seminars.