The Specification of Partial Static Equilibrium Models
研究部分静态均衡要素需求模型的设定问题,发现产出和准固定要素的内生性、省略份额方程的选择以及序列相关性对参数估计和价格弹性有显著影响,提醒研究者注意模型设定。
In conducting an investigation into the specification of partial static equilibrium factor demand models, this paper isolates: (1) the endogeneity of output and quasi-fixed factor levels; (2) the choice of omitted share equation; and (3 ) the presence of serial correlation (when using time series data) as the specification issues that most affect the existing empirical literature. The impact of specification changes are studied via a series of experiments conducted on an illustrative data set and are found to have significant effects on: parameter estimates and model diagnostics; departures between observed and full equilibrium levels of quasi- fixed factors; and price elasticities. As a consequence, caveats must be attached to several previous studies and care must be taken by future researchers in addressing using such models. Copyright 1987 by MIT Press.