GW Imbens… - Econometrica: Journal of the Econometric Society, 1994 - JSTOR
Page 1. Econometrica, Vol. 62, No. 2 (March, 1994), 467-475 IDENTIFICATION AND
ESTIMATION OF LOCAL AVERAGE TREATMENT EFFECTS1 BY GUIDO W. IMBENS
AND JOSHUA D. ANGRIST 1. INTRODUCTION RANDOM ...
GW Imbens - Review of Economics and statistics, 2004 - MIT Press
Page 1. NONPARAMETRIC ESTIMATION OF AVERAGE TREATMENT EFFECTS
UNDER EXOGENEITY: A REVIEW* Guido W. Imbens Abstract—Recently there
has been a surge in econometric work focusing on estimating ...
GW Imbens… - Journal of Econometrics, 2008 - Elsevier
K Hirano, GW Imbens… - Econometrica, 2003 - Wiley Online Library
Page 1. Econometrica, Vol. 71, No. 4 (July, 2003), 1161–1189 EFFICIENT ESTIMATION
OF AVERAGE TREATMENT EFFECTS USING THE ESTIMATED PROPENSITY SCORE
By Keisuke Hirano, Guido W. Imbens, and Geert Ridder1 ...
GW Imbens - 1999 - nber.org
Page 1. Page 2. Page 3. 1. Introduction Estimation of average treatment effects in
observational, or non-experimental, studies often requires adjustment for differences
in pre-treatment variables. If the number of pre- treatment ...
GM Imbens… - 2008 - nber.org
Page 1. NBER WORKING PAPER SERIES RECENT DEVELOPMENTS IN THE
ECONOMETRICS OF PROGRAM EVALUATION Guido M. Imbens Jeffrey M.
Wooldridge Working Paper 14251 http://www.nber.org/papers/w14251 ...
A Abadie… - Econometrica, 2006 - Wiley Online Library
Page 1. Econometrica, Vol. 74, No. 1 (January, 2006), 235–267 LARGE SAMPLE
PROPERTIES OF MATCHING ESTIMATORS FOR AVERAGE TREATMENT EFFECTS
BY ALBERTO ABADIE AND GUIDO W. IMBENS1 Matching ...
A Abadie, D Drukker, JL Herr… - Stata journal, 2004 - scholar.harvard.edu
Page 1. The Stata Journal (2004) 4, Number 3, pp. 290–311 Implementing matching estimators
for average treatment effects in Stata Alberto Abadie1 Harvard University David Drukker StataCorp
Jane Leber Herr UC Berkeley Guido W. Imbens2 UC Berkeley Abstract. ...
JD Angrist… - 1995 - nber.org
Page 1. NBER TECHNICAL PAPER SERIES AVERAGE CAUSAL RESPONSE WITH
VARIABLE TREATMENT INTENSITY Joshua D. Angrist Guido W. Imbens Technical
Paper No. 127 NATIONAL BUREAU OF ECONOMIC RESEARCH ...
Page 1. TECHNICAL WORKING PAPER SERIES ON THE FAILURE OF THE
BOOTSTRAP FOR MATCHING ESTIMATORS Alberto Abadie Guido W. Imbens Technical
Working Paper 325 http://www.nber.org/papers/T0325 NATIONAL ...
... Alberto Abadie Guido Imbens Technical Working Paper 283 http://www.nber.org/papers/T0283 ...
The views expressed in this paper are those of the authors and not necessarily those of the
National Bureau of Economic Research. © 2001 by Alberto Abadie and Guido Imbens. ...
A Abadie, J Angrist… - Econometrica, 2002 - Wiley Online Library
This paper reports estimates of the effects of JTPA training programs on the distribution of
earnings. The estimation uses a new instrumental variable (IV) method that measures
program impacts on quantiles. The quantile treatment effects (QTE) estimator reduces to ...
GW Imbens… - The Annals of Statistics, 1997 - JSTOR
Page 1. The Annals of Statistics 1997, Vol. 25, No. 1, 305-327 BAYESIAN INFERENCE
FOR CAUSAL EFFECTS IN RANDOMIZED EXPERIMENTS WITH NONCOMPLIANCE1
BY GUIDO W. IMBENS AND DONALD B. RUBIN Harvard University ...
K Hirano… - Health Services and Outcomes Research …, 2001 - Springer
Page 1. Health Services & Outcomes Research Methodology 2:259–278, 2001 Đ 2002 Kluwer
Academic Publishers. Manufactured in The Netherlands. Estimation of Causal Effects using
Propensity Score Weighting: An Application to Data on Right Heart Catheterization ...
GW Imbens… - Econometrica, 2004 - Wiley Online Library
Page 1. Econometrica, Vol. 72, No. 6 (November, 2004), 1845–1857 NOTES AND
COMMENTS CONFIDENCE INTERVALS FOR PARTIALLY IDENTIFIED
PARAMETERS BY GUIDO W. IMBENS AND CHARLES F. MANSKI1 ...
JD Angrist, GW Imbens… - 1995 - nber.org
Page 1. TECHNICAL WORKING PAPER SERIES JACKKNIFE INSTRUMENTAL
VARIABLES ESTIMATION Joshua D. Angrist Guido W. Imbens Alan Krueger Technical
Working Paper No. 172 NATIONAL BUREAU OF ECONOMIC ...
GW Imbens - The Review of Economic Studies, 1997 - restud.oxfordjournals.org
Page 1. Review of Economic Studies (1997) 64, 359-383 © 1997 The Review of
Economic Studies Limited 0034-6527/97/00170359$02.00 One-Step Estimators for
Over-Identified Generalized Method of Moments Models GUIDO ...
GW Imbens… - The Review of Economic …, 1994 - restud.oxfordjournals.org
Page 1. Review of Economic Studies (1994) 61, 655-680 © 1994 The Review of Economic
Studies Limited 0034-6527/94/00320655$02.00 Combining Micro and Macro Data in
Microeconometric Models GUIDO W. IMBENS Harvard University and ...
Page 1. NBER WORKING PAPER SERIES ESTIMATING THE EFFECT OF UNEARNED INCOME
ON LABOR SUPPLY, EARNINGS, SAVINGS, AND CONSUMPTION: EVIDENCE FROM A
SURVEY OF LOTTERY PLAYERS Guido W. Imbens Donald B. Rubin Bruce Sacerdote ...
GW Imbens… - The Review of Economic …, 1997 - restud.oxfordjournals.org
Page 1. Review of Economic Studies (1997) 64, 555-574 © 1997 The Review of
Economic Studies Limited 0034-6527/97/00260555$02.00 Estimating Outcome
Distributions for Compliers in Instrumental Variables Models GUIDO ...
GW Imbens - Econometrica: Journal of the Econometric Society, 1992 - JSTOR
Page 1. Econometrica, Vol. 60, No. 5 (September, 1992), 1187-1214 AN EFFICIENT
METHOD OF MOMENTS ESTIMATOR FOR DISCRETE CHOICE MODELS WITH
CHOICE-BASED SAMPLING BY GUIDO W. IMBENS1 In ...
GW Imbens - The American Economic Review, 2003 - JSTOR
Page 1. Sensitivity to Exogeneity Assumptions in Program Evaluation By GUIDO W.
IMBENS* In many empirical studies of the effect of social programs researchers assume
that, condi- tional on a set of observed covariates, assign ...
JD Angrist, K Graddy… - Review of Economic …, 2000 - Wiley Online Library
Page 1. Review of Economic Studies (2000) 67, 499–527 0034-6527000000000$02.00 2000
The Review of Economic Studies Limited The Interpretation of Instrumental Variables Estimators
in Simultaneous Equations Models with an Application to the Demand for Fish ...
VJ Hotz, GW Imbens… - 2000 - nber.org
Page 1. NBER WORKING PAPER SERIES The Long-Term Gains from GAIN: A Re-Analysis
of the Impacts of the California GAIN Program V. Joseph Hotz Guido W. Imbens Jacob A.
Klerman Working Paper8007 http://www.nber.org/papers/w8007 ...
GW Imbens - 2009 - nber.org
Page 1. NBER WORKING PAPER SERIES BETTER LATE THAN NOTHING: SOME
COMMENTS ON DEATON (2009) AND HECKMAN AND URZUA (2009) Guido W.
Imbens Working Paper 14896 http://www.nber.org/papers/w14896 ...
G Imbens… - 2009 - nber.org
We investigate the problem of optimal choice of the smoothing parameter (bandwidth) for the
regression discontinuity estimator. We focus on estimation by local linear regression, which
was shown to be rate optimal (Porter, 2003). Investigation of an expected-squared-error- ...
SG Donald, GW Imbens… - Journal of Econometrics, 2003 - Elsevier
GW Imbens… - Journal of Econometrics, 1996 - Elsevier
G Imbens… - Journal of Business & Economic Statistics, 1995 - JSTOR
In this article we investigate the effect of military service in the Netherlands on future
earnings. Estimating the cost or benefit of military service is complicated by the complex
selection that determines who eventually serves in the military: On the one hand, potential ...
VJ Hotz, GW Imbens… - 2006 - nber.org
Page 1. NBER WORKING PAPER SERIES EVALUATING THE DIFFERENTIAL EFFECTS OF
ALTERNATIVE WELFARE-TO-WORK TRAINING COMPONENTS: A RE-ANALYSIS OF THE
CALIFORNIA GAIN PROGRAM V. Joseph Hotz Guido Imbens Jacob A. Klerman ...
K Hirano, GW Imbens, G Ridder… - 1998 - nber.org
Page 1. COMBINING PANEL DATA SETS WITH ATTRITION AND REFRESHMENT
SAMPLES Keisuke Hirano Guido W. Imbens Geert Ridder Donald B. Rubin Technical
Working Paper 230 Page 2. TECHNICAL WORKING PAPER ...
JK Hellerstein… - Review of Economics and Statistics, 1999 - MIT Press
Page 1. The Review of Economics and Statistics VOL. LXXXI NUMBER 1 FEBRUARY
1999 IMPOSING MOMENT RESTRICTIONS FROM AUXILIARY DATA BY WEIGHTING
Judith K. Hellerstein and Guido W. Imbens* Abstract ...
JD Angrist… - 1991 - nber.org
Page 1. NBER TECHNICAL WORKING PAPERS SERIES SOURCES OF
IDENTIFYING INFORMATION IN EVALUATION MODELS Joshua U. Angrist Guido
W. Irtens Technical Working Paper No. 117 NATIONAL EUREAU OF ...
Page 1. NBER WORKING PAPER SERIES ON THE ACCURACY AND PROPERTIES
OF RECENT ACROECONOIC FORECASTS Victor Zarnowitz* University of Chicago and
National Bureau of Econoiic Research Working Paper No. 229 ...
RK Crump, VJ Hotz, GW Imbens… - 2006 - nber.org
... V. Joseph Hotz Department of Economics Box 951477 UCLA Los Angeles, CA 90095-1477
hotz@econ.ucla.edu Guido Imbens Department of Economics Littauer Center Harvard University
1805 Cambridge Street Cambridge, MA 02138 imbens@fas.harvard.edu ...
DR Hyslop… - Journal of Business and Economic Statistics, 2001 - ASA
Page 1. Bias From Classical and Other Forms of Measurement Error Dean R. Hyslop
Department of Economics, University of California at Los Angeles, Los Angeles, CA
90095 (dhyslop@pana.sscuet.ucla.edu) Guido W. Imbens ...
F Mealli, GW Imbens, S Ferro… - Biostatistics, 2004 - Biometrika Trust
Page 1. Biostatistics (2004), 5, 2, pp. 207–222 Printed in Great Britain Analyzing a randomized
trial on breast self-examination with noncompliance and missing outcomes FABRIZIA MEALLI
Dipartimento di Statistica 'G. Parenti', Universit`a di Firenze, Italy ...
T Lancaster… - Journal of Econometrics, 1996 - Elsevier
This paper considers inference about a parametric binary choice model when the data
consist of two distinct samples. The first is a random sample from the people who made
choice 1, say, with all relevant covariates completely observed. The second is a random ...
GW Imbens - Journal of Business and Economic Statistics, 2002 - ASA
Page 1. Generalized Method of Moments and Empirical Likelihood Guido W. Imbens
Department of Economics and Department of Agricultural and Resource Economics,
University of California Berkeley, 649 Evans Hall #3880 ...
GW Imbens… - Journal of the Royal Statistical …, 2005 - Wiley Online Library
Skip to Main Content. Wiley Online Library will be disrupted 14
Jan from 10-12 GMT for monthly maintenance. ...
A Abadie… - Harvard University Department of …, 2007 - hks.harvard.edu
Page 1. Bias Corrected Matching Estimators for Average Treatment Effects Alberto
Abadie and Guido W. Imbens* Harvard University and NBER August 2007 Abstract
In Abadie and Imbens (2006), we have shown that simple ...
VJ Hotz, GW Imbens… - 1999 - nber.org
Page 1. Page 2. Page 3. 1. Introduction Consider a government contemplating the
implementation of a training or other social assistance program. The decision to implement
the program depends on the assessment of its likely effectiveness. ...
GW Imbens - The Review of Economics and Statistics, 1994 - JSTOR
Page 1. TRANSITION MODELS IN A NON-STATIONARY ENVIRONMENT GW Imbens*
Abstract-An alternative form of the proportional hazard model is proposed. It allows one to
introduce correlation between exit rates at the same (calendar) time for different individuals. ...
GW Imbens… - 1993 - nber.org
Page 1. NBER WORKING PAPER SERIES RE-EMPLOYMENT PROBABILITIES
OVER THE BUSINESS CYCLE Guido Imbens Lisa M. Lynch Working Paper No.
4585 NATIONAL BUREAU OF ECONOMIC RESEARCH 1050 ...
G Imbens… - Lecture Notes, NBER Summer Institute, 2007 - nber.org
In this course we will discuss developments in econometrics over the last decade and a half.
The focus will be on methods that are relevant for, and ready to be used by, empirical
researchers, and the course is aimed at such researchers. Although most of the ...
VJ Hotz, GW Imbens… - Journal of Econometrics, 2005 - econ.duke.edu
Page 1. www.elsevier.com/locate/econbase Journal of Econometrics ] (]]] Predicting
the efficacy of future training programs using past experiences at other locations
V. Joseph Hotza,*, Guido W. Imbensb, Julie H. Mortimerc ...
RK Crump, VJ Hotz, GW Imbens… - 2006 - nber.org
Page 1. TECHNICAL WORKING PAPER SERIES NONPARAMETRIC TESTS FOR TREATMENT
EFFECT HETEROGENEITY Richard K. Crump V. Joseph Hotz Guido W. Imbens Oscar A. Mitnik
Technical Working Paper 324 http://www.nber.org/papers/T0324 ...
Page 1. NBER WORKING PAPER SERIES COMPLEMENTARITY AND AGGREGATE
IMPLICATIONS OF ASSORTATIVE MATCHING: A NONPARAMETRIC ANALYSIS Bryan S.
Graham Guido W. Imbens Geert Ridder Working Paper 14860 http://www.nber.org/papers/w14860 ...
G Chamberlain… - Econometrica, 2004 - Wiley Online Library
In this paper we propose a new estimator for a model with one endogenous regressor and
many instrumental variables. Our motivation comes from the recent literature on the poor
properties of standard instrumental variables estimators when the instrumental variables ...
SG Donald, GW Imbens… - Journal of Econometrics, 2009 - Elsevier
G Chamberlain… - Journal of Business and Economic Statistics, 2003 - ASA
Page 1. Nonparametric Applications of Bayesian Inference Gary Chamberlain
Department of Economics, Harvard University, Cambridge, MA 02138 (
gary_chamberlain@harvard.edu) Guido W. Imbens Department of Economics ...
[CITATION] Causal inference in statistics and the social sciences
GW Imbens… - 2009 - Cambridge and New York: …
GW Imbens - ECONOMETRIC SOCIETY MONOGRAPHS, 2007 - cemmap.com
Page 1. Nonadditive Models with Endogenous Regressors ∗ Guido W. Imbens† First Draft: July
2005 This Draft: February 2006 Abstract In the last fifteen years there has been much work on
nonparametric identification of causal effects in settings with endogeneity. ...
A Abadie… - Journal of Business and Economic Statistics, 2011 - ASA
Page 1. Bias-Corrected Matching Estimators for Average Treatment Effects Alberto
ABADIE John F. Kennedy School of Government, Harvard University, Cambridge,
MA 02138 and NBER (alberto_abadie@harvard.edu) Guido ...
T Lemieux… - Journal of Econometrics, 2008 - dash.harvard.edu
In Regression Discontinuity (RD) designs for evaluating causal effects of interventions,
assignment to a treatment is determined at least partly by the value of an observed covariate
lying on either side of a fixed threshold. These designs were first introduced in the ...
[CITATION] Labor market transitions over the business cycle
GW Imbens… - Review of Economics and Statistics, 1992
G Chamberlain… - 1996 - nber.org
Page 1. Journal of Public Economics 10 (1978) 361—377. North-Holland Publishing Company
THE EFFECT OF SOCIAL SECURITY ON EARLY RETIREMENT Michael J. BOSKIN and Michael
D. HURD* National Bureau of Economic Research, SfanThrd, CA 94305, LISA. ...
Page 1. NBER WORKING PAPER SERIES AN EMPIRICAL MODEL FOR STRATEGIC
NETWORK FORMATION Nicholas Christakis James Fowler Guido W. Imbens Karthik
Kalyanaraman Working Paper 16039 http://www.nber.org/papers/w16039 ...
JD Angrist, K Graddy… - 1995 - nber.org
Page 1. Economeirica, Vol. 47, No. 6 (November, 1979) INVESTORS' PORTFOLIO
BEHAVIOR UNDER ALTERNATIVE MODELS OF LONG-TERM INTEREST RATE
EXPECTATIONS: UNITARY, RATIONAL, OR AUTOREGRESSIVE ...
JD Angrist… - Journal of Human Resources, 1999 - JSTOR
Page 1. Comments Comment on James J. Heckman, "Instrumental Variables: A Study
of Implicit Behavioral Assumptions Used in Making Program Evaluations" Joshua
D. Angrist Guido W. Imbens* ABSTRACT In a recent paper ...
GW Imbens… - 2001 - books.google.com
Page 232. CHAPTER 10 The Performance of Empirical Likelihood and its
Generalizations Guido W. Imbens and Richard H. Spady ABSTRACT We calculate
higher-order asymptotic biases and mean squared errors (MSE) for ...
Page 1. NBER WORKING PAPER SERIES MATCHING ON THE ESTIMATED
PROPENSITY SCORE Alberto Abadie Guido W. Imbens Working Paper 15301
http://www.nber.org/papers/w15301 NATIONAL BUREAU OF ECONOMIC ...
Abstract: In this paper we analyze the causal effects of reallocating individuals across social
groups of varying sizes in the presence of social interactions or spillovers. We consider the
case where individuals are either 'high'or 'low'types. Own outcomes may depend on the ...
S Athey… - International Economic Review, 2007 - Wiley Online Library
Skip to Main Content. ...
[CITATION] Rubin causal model
GW Imbens - The new Palgrave dictionary of …, 2008 - Palgrave McMillan, New York
[CITATION] Choice-based sampling of dynamic populations
T Lancaster… - Panel Data and Labor Market Studies. New York: …, 1990
[CITATION] Causal inference with instrumental variables
G Imbens,
DB Rubin… - 1994 - Harvard Institute of Economic …
GW Imbens - Econometric Evaluation of Labour Market Policies, 2001 - Springer
Page 1. Some remarks on instrumental variables Guido W. Imbens Abstract. There
has been much work on identification and inference with instru- mental variables
in the last decade. Researchers have investigated conditions ...
[CITATION] Identification of Causal Effects Using
JD Angrist, GW Imbens… - 1996
G Imbens - Harvard Institute of Economic Research Working …, 1993 - econpapers.repec.org
... EconPapers has moved to http://EconPapers.repec.org! Please update your bookmarks. A New
Approach to Generalized Method on Moments Estimation. Guido Imbens (). ...
[CITATION] Nonparametric identification and estimation of non-separable models
V Chernozhukov, G Imbens… - Journal of Econometrics, forthcoming, 2006
GW Imbens… - 1996 - nber.org
Page 1. NBER Working Paper Series TWO PAPERS ON THE RECENT RISE IN US
DIVORCE RATES Robert T. Michael Working Paper No. 202 CENTER FOR ECONOMIC
ANALYSIS OF HUMAN BEHAVIOR AND SOCIAL INSTITUTIONS ...
[CITATION] Difference-in-Differences Estimation
G Imbens… - What's New in Econometrics, Lecture, 2007
[CITATION] The Econometrics of Difference in Differences
G Imbens, JB Liebman… - Harvard University Department of Economics. …, 1997
[CITATION] Estimation of average treatment effects under unconfoundedness
G Imbens… - What's New in Econometrics Minicourse, 2007
[CITATION] Job Separation and Job Matching
T Lancaster, G Imbens… - 1987 - Martinus Nijhoff Publishers
GW Imbens… - Journal of econometrics, 2002 - Elsevier
[CITATION] Control Function and Related Methods
G Imbens… - What's New in Econometrics, 2007
GW Imbens… - Portuguese Economic Journal, 2006 - Springer
Page 1. ORIGINAL PAPER Re-employment probabilities over the business cycle Guido
W. Imbens & Lisa M. Lynch Received: 15 March 2006 /Accepted: 8 July 2006 /
Published online: 27 September 2006 © Springer-Verlag 2006 ...
[CITATION] Implementing Matching Estimators for Average Treatment Effects
A Abadie, D Drukker, JL Herr… - 2002 - UC Berkeley Working Paper
JA Klerman, VJ Hotz, E Reardon, AG Cox… - 2002 - 192.5.14.43
In response to national welfare reform legislation, California passed legislation on August
11, 1997, that replaced the existing Aid to Families with Dependent Children (AFDC) and
Greater Avenues for Independence (GAIN) programs with the California Work Opportunity ...
[CITATION] Better LATE than nothing
G Imbens - NBER Working paper, 2009
[CITATION] The Propensity Score with Continuous Treatments
GW Imbens… - Draft of the Chapter “Missing Data and Bayesian …, 2004
A Abadie… - Annales d'Économie et de Statistique, 2008 - JSTOR
Page 1. Estimation of the Conditional Variance in Paired Experiments Alberto ABADIE
& Guido W. IMBENS Harvard University and NBER* ABSTRACT. - In paired
randomized experiments units are grouped in pairs, often based ...
JD Angrist, GW Imbens… - 1992 - en.scientificcommons.org
[CITATION] W.(2002).“Generalized method of moments and empirical likelihood,”
G Imbens - Journal of Business and Economic Statistics
G Chamberlain… - Harvard Institute of Economic …, 1995 - econpapers.repec.org
... EconPapers has moved to http://EconPapers.repec.org! Please update your bookmarks.
Semiparametric Applications of Bayesian Influence. Gary Chamberlain and Guido Imbens (). ...
JA Klerman, VJ Hotz, G Imbens, P Steinberg… - 2000 - DTIC Document
Abstract: In response to national welfare reform legislation--the Personal Responsibility and
Work Opportunity Reconciliation Act (PRWORA), which was signed in August 1996--
California passed legislation on August 11, 1997, that replaced the existing Aid to ...
D Fuji, G Imbens… - Manuscript. http://www. …, 2009 - economics.harvard.edu
These notes describe the implementation of the Imbens-Kalyanaram bandwidth selection in
Regression Discontinuity settings using Matlab and Stata. There are two data sets to
illustrate the programs. The first is an artificial data set for the sharp regression ...
[CITATION] pThe Propensity Score with Continuous Treat& mentsq
K Hirano… - Applied Bayesian Modeling and Causal Inference from …, 2004
GW Imbens - 2010 - psycnet.apa.org
Page 1. An Economist's Perspective on Shadish (2010) and West and Thoemmes
(2010) Guido W. Imbens Harvard University In Shadish (2010) and West and
Thoemmes (2010), the authors contrasted 2 approaches to causality. ...
[CITATION] Randomization inference with an instrumental variable
GW Imbens… - Journal of the Royal Statistical Society, Series A, 2005
[CITATION] Instrumental Variables with Treatment Effect Heterogeneity: Local Average Treatment Effects
G Imbens… - Lecture presented at National Bureau of Economic …, 2007
[CITATION] Identification of Causal
J Angrist, G Imbens… - 1996
[CITATION] On the Fragility of Instrumental Variables Estimators
G Imbens,
DB Rubin… - 1994 - Harvard Institute of Economic …
[CITATION] What's New in Econometrics: Difference-in-Differences Estimation
G Imbens… - Lecture Notes, 2007
T Lancaster… - 1991 - en.scientificcommons.org
GW IMBENS - Journal of Applied Econometrics, 1997 - Wiley Online Library
Skip to Main Content. ...
JD Angrist, GW Imbens… - Journal of the American …, 1996 - faculty.smu.edu
Page 1. Identification of Causal Effects Using Instrumental Variables Joshua D. Angrist;
Guido W. Imbens; Donald B. Rubin Journal of the American Statistical Association,
Vol. 91, No. 434 (J un., 1996), 444-455. Stable URL: http ...
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