This article surveys J. D. Sargan’s work on instrumental variables (IV) estimation and its connections with the generalized method of moments (GMM). First the modeling context in which Sargan motivated IV estimation is presented. Then the theory of IV estimation as developed by Sargan is discussed. His approach to efficiency, his minimax estimator, tests of overidentification and underidentific...

â â â â  reza roshan [1] â  department of economics, university of sistan and baluchestan , iran â  mosayeb pahlavani â  department of economics, university of sistan and baluchestan, iran â  mohammad nabi shahyaki tash â  department of economics, university of sistan and baluchestan, iran â  â â â  abstract â  consumption is the principal feature of iran’s gross national production. therefor...

To obtain consistency and asymptotic normality, a generalized method of moments (GMM) estimator typically is defined to be an approximate global minimizer of a GMM criterion function. To compute such an estimator, however, can be problematic because of the difficulty of global optimization. In consequence, practitioners usually ignore the problem and take the GMM estimator to be the result of a...

This research examines the effect of crisis due to COVID-19 pandemic on dividend policy in Indonesia. The purposive sampling method was used collect data from corporates listed IDX 2014 2020 and analyzed using static dynamic panel approaches. fixed-effect models (FEM) were selected for regression. Meanwhile, first difference-generalized moments (FD-GMM) system-generalized (SYS-GMM) determine ro...

This paper determines the properties of standard generalized method of moments (GMM) estimators, tests, and confidence sets (CSs) in moment condition models in which some parameters are unidentified or weakly identified in part of the parameter space. The asymptotic distributions of GMM estimators are established under a full range of drifting sequences of true parameters and distributions. The...

This paper determines the properties of standard generalized method of moments (GMM) estimators, tests, and confidence sets (CSs) in moment condition models in which some parameters are unidentified or weakly identified in part of the parameter space. The asymptotic distributions of GMM estimators are established under a full range of drifting sequences of true parameters and distributions. The...

This paper considers the estimation methods for dynamic panel data (DPD) models with fixed effects, which suggested in econometric literature, such as least squares (LS) and generalized method of moments (GMM). These methods obtain biased estimators for DPD models. The LS estimator is inconsistent when the time dimension (T) is short regardless of the cross-sectional dimension (N). Although con...

Our study investigated the impact of institutional quality on health system outcomes, utilizing worldwide governance indicators and analyzing data from 158 countries between 2001 2020. We employed Principal Component Analysis (PCA) to create a composite index conducted various tests select appropriate econometric model. The role quality, along with other variables, in outcomes was estimated usi...