1. R&D: A Small Contribution to Productivity Growth

   • Diego Comin

   OriginalPaper Pages: 391 - 421

2. Wealth Breeds Decline: Reversals of Leadership and Consumption Habits

   • Lionel Artige
   • Carmen Camacho
   • David De La Croix

   OriginalPaper Pages: 423 - 449

3. Diffusion and Innovation of New Technologies under Skill Heterogeneity

   • Toshihiko Mukoyama

   OriginalPaper Pages: 451 - 479