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Efficient GMM estimation of the semi-strong GARCH(1,1) model requires simultaneous estimation of the conditional third … and fourth moments. This paper proposes a simple alternative to efficient GMM based upon the unconditional skewness of … instruments. Sequential estimation involves TSLS in a first step followed by linear GMM. Simultaneous estimation involves either …
Persistent link: https://www.econbiz.de/10008543477
We extend our 2003 paper on instrumental variables and generalized method of moments estimation, and we test and describe enhanced routines that address heteroskedasticity- and autocorrelation-consistent standard errors, weak instruments, limited-information maximum likelihood and k-class...
Persistent link: https://www.econbiz.de/10005568801
Innovations, be they radical new products or technology improvements are widely recognized as a key factor of economic growth. To identify the factors triggering innovative activities is a main concern for economic theory and empirical analysis. As the number of hypotheses is large, the process...
Persistent link: https://www.econbiz.de/10010270208
Innovations, be they radical new products or technology improvements are widely recognized as a key factor of economic growth. To identify the factors triggering innovative activities is a main concern for economic theory and empirical analysis. As the number of hypotheses is large, the process...
Persistent link: https://www.econbiz.de/10008629502
Persistent link: https://www.econbiz.de/10010866887
I develop an empirical model that estimates a firm-specific accrual noise ratio (ANR), an operational and statistically grounded measure of accrual reliability, and test the measure's construct validity. The model allows accrual reliability to vary across firms, which is particularly important...
Persistent link: https://www.econbiz.de/10009475468
Persistent link: https://www.econbiz.de/10009783751
In this paper, we consider the Cox-type tests of non-nested hypotheses for spatial autoregressive (SAR) models with SAR disturbances. We formally derive the asymptotic distributions of the test statistics. In contrast to regression models, we show that the Cox-type and J-type tests for...
Persistent link: https://www.econbiz.de/10010666092
Persistent link: https://www.econbiz.de/10010348748