西部大开发中的金融支持与区域经济增长——基于西部地区省际面板数据的经验分析

本文基于2000—2009年我国西部地区省际面板数据,使用TSLS工具变量法,运用面板数据单位根检验,协整检验和误差修正模型,对西部大开发战略实施十年以来西部地区金融发展与经济增长的长期关系和短期关系进行了实证研究。实证结果表明,西部各省份经济增长的金融贡献度存在差距;西部地区金融发展、控制变量与区域经济增长具有长期稳定的均衡关系,而金融支持的短期效应并不明显。在此基础上,文章提出在推进新一轮西部大开发的过程中,进一步深化金融体制改革,加快转变经济增长方式,提高区域经济增长质量的几点政策建议。     

Weak Instrumental Variables Models for Longitudinal Data

This article considers the estimation and testing of a within-group two-stage least squares (TSLS) estimator for instruments with varying degrees of weakness in a longitudinal (panel) data model. We show that adding the repeated cross-sectional information into a regression model can improve the estimation in weak instruments. Moreover, the consistency and limiting distribution of the TSLS estimator are established when both N and T tend to infinity. Some asymptotically pivotal tests are extended to a longitudinal data model and their asymptotic properties are examined. A Monte Carlo experiment is conducted to evaluate the finite sample performance of the proposed estimators.