Underidentification?

• Autores: Manuel Arellano, Lars Peter Hansen, Enrique Sentana Iváñez
• Localización: Documentos de Trabajo ( CEMFI ), Nº. 5, 2009
• Idioma: inglés
• Enlaces
  • Texto completo (pdf)
• Resumen

  • We develop methods for testing the hypothesis that an econometric model is undeerindentified and inferring the nature of the failed identification. By adopting a generalized-method-of moments perspective, we feature directly the structural relations and we allow for nonlinearity in the econometric specification. We establish the link between a test for overidentifacion and our proposed test for underidentification. If, after attempting to replicate the structural relation, we find substantial evidence against the overidentifying restrictions of an augmented model, this is evidence against underidentification of the original model.