研討日期

20120114日上午10:00 ~ 13:00

研討地點

台大社會科學院26教室

討論題目

題目

作者

文獻出處

Innovation and Trade with Heterogeneous Firms

 

 

Long, N. V.

Raff, H.

Stähler, F.

 

 

Journal of International Economics

2011

報告人

王佳琪

參加人員

黃鴻、梁文榮、林燕淑、吳芝文、王光正、彭正浩、張瑞雲、高國峯、陳金盛、曾靜枝、丁虹仁、吳宜謙、周冰瑤、王佳琪、鍾暳陵、張志瑋、呂得成、徐靖、王詩蘋、施姵全

 

討論提要

   This paper examines how trade liberalization affects firms’ investment in process R&D and what this implies for industry productivity. This paper assumes that firms are ex post heterogeneous. Specifically, firms decide on entry and their R&D spending before observing their marginal cost. After firms have done R&D, each firm learns its own MC but knows nothing about rivals’ actual MC.

 

結論

This paper developed a model of international trade with heterogeneous firms to explore the effects of trade liberalization on firms’ innovation incentives, as well as on industry productivity and social welfare.

l   The effect of t on expected industry-level R&D spending is non-monotonic. (1) When t is low, trade liberalization raises industry R&D spending. (2) When t is high, trade liberalization reduces industry R&D spending.

l   Trade liberalization leads to higher industry productivity.

l   When the market structure is endogenous, trade liberalization leads to a higher consumer surplus and SW. However, this may not be true in the short run when there is no entry.

l   If the firms are homogeneous, trade liberalization boosts R&D spending at the firm and industry level irrespective of whether there is entry or not. However, if the firms are heterogeneous and there is no entry (free entry), trade cost and R&D spending is non-monotonic (independent).

l    

備註