| Full text | |
| Author(s): |
Ribeiro, Andre L. P.
;
Hotta, Luiz K.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | PLoS One; v. 11, n. 12 DEC 28 2016. |
| Web of Science Citations: | 0 |
| Abstract | |
Knowledge of contagion among economies is a relevant issue in economics. The canonical model of contagion is an alternative in this case. Given the existence of endogenous variables in the model, instrumental variables can be used to decrease the bias of the OLS estimator. In the presence of heteroskedastic disturbances this paper proposes the use of conditional volatilities as instruments. Simulation is used to show that the homoscedastic and heteroskedastic estimators which use them as instruments have small bias. These estimators are preferable in comparison with the OLS estimator and their asymptotic distribution can be used to construct confidence intervals. (AU) | |
| FAPESP's process: | 13/22930-0 - Price discovery in high-dimensional arbitrage portfolios |
| Grantee: | Pedro Luiz Valls Pereira |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/00506-1 - Time series, wavelets and functional data analysis |
| Grantee: | Pedro Alberto Morettin |
| Support Opportunities: | Research Projects - Thematic Grants |