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, this gender-product gap shrinks towards zero. Further, consistent with a sampling bias mechanism, we find that the …
Persistent link: https://www.econbiz.de/10014241447
In this paper I analyze GMM estimation when the sample is not a random draw from the population of interest. I exploit auxiliary information, in the form of moments from the population of interest, in order to compute weights that are proportional to the inverse probability of selection. The...
Persistent link: https://www.econbiz.de/10014122994
class of indirect inference models. Our smoothing procedure makes use of importance sampling weights in estimation of the … auxiliary model on simulated data. The importance sampling weights are constructed from likelihood contributions implied by the …
Persistent link: https://www.econbiz.de/10012949932
effective sample for the American Community Survey (ACS) is much smaller than it was for Census 2000, to which it is being … level of sampling variation and bias due to the smaller sample. This study uses 100% microdata from the 1940 census to … simulate the impact of different sampling rates on estimates of several measures of segregation and to propose and test the …
Persistent link: https://www.econbiz.de/10012950051
first characterize the biases in both network statistics and estimates of network effects under non-random sampling …-classical measurement-error problems when applied as regressors. Apart from the sampling rate and the elicitation procedure, these biases … applied to network data collected via both designed and non-designed sampling procedures, does not require one to assume any …
Persistent link: https://www.econbiz.de/10012907751
Problems of sample selection arise in the analysis of both experimental and non-experimental data. In clinical trials to evaluate the impact of an intervention on health and mortality, treatment assignment is typically nonrandom in a sample of survivors even if the original assignment is random....
Persistent link: https://www.econbiz.de/10013221121
We develop a model for decomposing the covariance structure of panel data on firms into a part due to permanent heterogeneity, a part due to differential histories with unknown ages, and a part due to the evolution of economic shocks to the firm. Our model allows for the endogenous death of...
Persistent link: https://www.econbiz.de/10013221330
In this paper, I present a simple characterization of the sample selection bias problem that is also applicable to the conceptually distinct econometric problems that arise from truncated samples and from models with limited dependent variables. The problem of sample selection bias is fit within...
Persistent link: https://www.econbiz.de/10013222664
This paper assesses the small sample properties of Generalized Method of Moments (GMM) based Wald statistics. The analysis is conducted assuming that the data generating process corresponds to (i) a simple vector white noise process and (ii) an equilibrium business cycle model. Our key findings...
Persistent link: https://www.econbiz.de/10013224900
Instrumental Variables (IV) estimates tend to be biased in the same direction as Ordinary Least Squares (OLS) in finite samples if the instruments are weak. To address this problem we propose a new IV estimator which we call Split Sample Instrumental Variables (SSIV). SSIV works as follows: we...
Persistent link: https://www.econbiz.de/10013225846