| 来源类型 | Discussion paper |
| 规范类型 | 论文 |
| 来源ID | DP8843 |
| DP8843 Innovation vs imitation and the evolution of productivity distributions | |
| Fabrizio Zilibotti; Michael König | |
| 发表日期 | 2012-02-01 |
| 出版年 | 2012 |
| 语种 | 英语 |
| 摘要 | We develop a tractable dynamic model of productivity growth and technology spillovers that is consistent with the emergence of real world empirical productivity distributions. Firms can improve productivity by engaging in in-house R&D, or alternatively, by trying to imitate other firms? technologies subject to limits to their absorptive capacities. The outcome of both strategies is stochastic. The choice between in-house R&D and imitation is endogenous, and based on firms? profit maximization motive. Firms closer to the technological frontier have less imitation opportunities, and tend to choose more often in-house R&D, consistent with the empirical evidence. The equilibrium choice leads to balanced growth featuring persistent productivity differences even when starting from ex-ante identical firms. The long run productivity distribution can be described as a traveling wave with tails following Zipf?s law as it can be observed in the empirical data. Idiosyncratic shocks to firms? productivities of R&D reduce inequality, but also lead to lower aggregate productivity and industry performance. |
| 主题 | International Macroeconomics |
| 关键词 | Innovation Growth Quality ladder Absorptive capacity Productivity difference Spillovers |
| URL | https://cepr.org/publications/dp8843 |
| 来源智库 | Centre for Economic Policy Research (United Kingdom) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/537679 |
| 推荐引用方式 GB/T 7714 | Fabrizio Zilibotti,Michael König. DP8843 Innovation vs imitation and the evolution of productivity distributions. 2012. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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