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, Comment l'innovation affecte-t-elle l'auto-sélection des entreprises dans les marchés d'exportation ? 2. comment l'innovation affecte-t-elle l'apprentissage par l'exportation ? 3. les entreprises innovent-elles de manière persistante dans le temps ?

, Cependant, cette thèse apporte de nombreuses originalités qui permettent d'améliorer la compréhension du mécanisme de l'innovation produit et de ses effets sur la performance des entreprises. Pour l'ensemble des sujets traités, mes investigations portent sur une unique industrie évitant ainsi les effets intersectoriels pouvant affecter nos estimations, Ces trois sujets ont largement été traités dans la littérature

, Database, nous disposons d'une nouvelle mesure de l'innovation qui est l

, Ce chapitre contribue à la littérature en proposant une modélisation théorique dans laquelle l'innovation produit est considérée comme une composante essentielle de la demande. Partant de l'hypothèse qu'un nouveau produit introduit sur un marché donné intègre les préférences des consommateurs du dit marché. Nos prédictions montrent que l'innovation produit affecte la performance à l'export de deux façons distinctes et opposées. Premièrement, l'introduction d'un nouveau produit affecte positivement la demande d

, Deuxièmement, l'introduction d'un nouveau produit influence positivement le prix de la variété proposée (l'effet coût). Ainsi, l'introduction d'un nouveau produit améliore la performance à l'export seulement si l'effet demande est supérieur à l'effet coût, Ces prédictions théoriques sont testées et confirmées pour les entreprises de l'industrie laitière française

, Le chapitre 4 s'intéressait au rôle de l'innovation produit dans l'apprentissage par l'exportation. Ce chapitre contribue à la littérature de manière méthodologique, Nous proposons en