Chao, John Chao; Swanson, Norman R. - Cowles Foundation for Research in Economics, Yale University - 2003
adopted in this paper combines key features of the local-to-zero framework of Staiger and Stock (1997) and the many … consider a general local-to-zero framework which allows for an arbitrary degree of instrument weakness by modeling the first … weak instruments. Our results, thus, add to the findings of Staiger and Stock (1997) who study a local-to-zero framework …