| 来源类型 | Discussion paper |
| 规范类型 | 论文 |
| 来源ID | DP10390 |
| DP10390 Factor based identification-robust inference in IV regressions | |
| Massimiliano Marcellino; George Kapetanios | |
| 发表日期 | 2015-02-01 |
| 出版年 | 2015 |
| 语种 | 英语 |
| 摘要 | Robust methods for IV inference have received considerable attention recently. Their analysis has raised a variety of problematic issues such as size/power trade-offs resulting from weak or many instruments. We show that information-reduction methods provide a useful and practical solution to this and related problems. Formally, we propose factor-based modifications to three popular weak-instrument-robust statistics, and illustrate their validity asymptotically and in finite samples. Results are derived using asymptotic settings that are commonly used in both the factor and weak instrument literatures. For the Anderson-Rubin statistic, we also provide analytical finite sample results that do not require any underlying factor structure. An illustrative Monte Carlo study reveals the following. Factor based tests control size regardless of instruments and factor quality. All factor based tests are systematically more powerful than standard counterparts. With informative instruments and in contrast with standard tests: (i) power of factor-based tests is not affected by k even when large, and (ii) weak factor structure does not cost power. An empirical study on a New Keynesian macroeconomic model suggests that our factor-based methods can bridge a number of gaps between structural and statistical modeling. |
| 主题 | International Macroeconomics |
| 关键词 | Iv regression Weak instruments Identification-robust inference Factor model Principle components New keynesian model |
| URL | https://cepr.org/publications/dp10390 |
| 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/539221 |
| 推荐引用方式 GB/T 7714 | Massimiliano Marcellino,George Kapetanios. DP10390 Factor based identification-robust inference in IV regressions. 2015. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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