Frölich, Markus; Lechner, Michael - Centre for Microdata Methods and Practice (CEMMAP) - 2006
, conditional local IV, active labour market policy,
state borders, geographic variation, Switzerland, Fuller estimator … exploiting geographic borders as an instrumental variable to uncover the effects of policy inter-
ventions has been used in other … studies. Card and Krueger (1994), Holmes (1998), Black (1999) and Pence
(2003) use the U.S. state or district borders to …