000			01856cam a22003257 4500
001			w14706
003			NBER
005			20211020111558.0
006			m o d
007			cr cnu||||||||
008			210910s2009 mau fo 000 0 eng d
100	1		_aHeckman, James J. _932303
245	1	0	_aComparing IV With Structural Models: _bWhat Simple IV Can and Cannot Identify / _cJames J. Heckman, Sergio Urzua.
260			_aCambridge, Mass. _bNational Bureau of Economic Research _c2009.
300			_a1 online resource: _billustrations (black and white);
490	1		_aNBER working paper series _vno. w14706
500			_aFebruary 2009.
520	3		_aThis paper compares the economic questions addressed by instrumental variables estimators with those addressed by structural approaches. We discuss Marschak's Maxim: estimators should be selected on the basis of their ability to answer well-posed economic problems with minimal assumptions. A key identifying assumption that allows structural methods to be more informative than IV can be tested with data and does not have to be imposed.
530			_aHardcopy version available to institutional subscribers
538			_aSystem requirements: Adobe [Acrobat] Reader required for PDF files.
538			_aMode of access: World Wide Web.
588	0		_aPrint version record
690		7	_aC31 - Cross-Sectional Models • Spatial Models • Treatment Effect Models • Quantile Regressions • Social Interaction Models _2Journal of Economic Literature class.
700	1		_aUrzua, Sergio.
710	2		_aNational Bureau of Economic Research.
830		0	_aWorking Paper Series (National Bureau of Economic Research) _vno. w14706.
856	4	0	_uhttps://www.nber.org/papers/w14706
856			_yAcceso en línea al DOI _uhttp://dx.doi.org/10.3386/w14706
942			_2ddc _cW-PAPER
999			_c333415 _d291977