Marie Claire Villeval Marie Claire Villeval Marie Claire Odile Villeval (born 26 June 1957) is a French economist and research professor in economics at the National Center for Scientific Research. Marie Claire Villeval obtained her PhD in economics from the Paris-Nanterre University in 1981 and her Habilitation from the University of Lyon in 1998. She is research professor in economics at the National Center for Scientific Research (CNRS) and she is affiliated with the Groupe d’Analyse et de Théorie Economique (GATE) research institute, at the University of Lyon 2, France. She has been the director of GATE from 2007 to 2016 and is
Jean-Jacques Greif Jean-Jacques Greif Jean-Jacques Greif (born in Paris in 1944) is a French journalist and writer. He has written for the magazine Marie Claire for thirty years. In the 80s, while he was writing about education in "Marie Claire", he taught French and physics now and then in a small school. He wrote some articles about science in a magazine for children. His first published opus was a documentary book for children about computers (1986). From 1988 to 1995, he wrote how-to books about the Macintosh computer and its software. After more than twenty books in French (two of which aimed