Revue d'économie industrielle - Année 1987 - Volume 40 - Numéro 1 - Pages 1-8Not so Many discussions between Senior executives and academics stressed the problem of firms investment. The two days colloquium of Paris X aims at filling this gap. Both a physical and an intellectual element, a strategic factor and a value added vector, source of benefit and indebtedness, a microeconomic as well as a macroeconomic variable : investment bas been analysed and its conditions of recovery being discussed. The following papers dot not pretends to bring definitive solutions to the productive investment, a paralysis problem for french firms. Conversely, it clearly appears that universal answers do not exist, the miracle policies as hed by the ones are meaningless for the others, that theoretically, fundamental elements can seem Wortheessly gor the practicians... 8 pages Source : Persée ; Ministère de la jeunesse, de l’éducation nationale et de la recherche, Direction de l’enseignement supérieur, Sous-direction des bibliothèques et de la documentation.