Research Staff

Sokbae (Simon) Lee

Columbia University and IFS

Sokbae is a Professor of Economics at Columbia University. His research focuses on theoretical and applied econometrics.

Selected Publications

Testing functional inequalities

This paper develops tests for inequality constraints of nonparametric regression functions. The test statistics involve a… Continue reading.

Sokbae (Simon) Lee, Song, Kyungchul, Yoon-Jae Whang
31 January 2013 | Journal Article

Previous version

Testing functional inequalities
Sokbae (Simon) Lee, Kyungchui (Kevin) Song, Yoon-Jae Whang
22 February 2011 | CWP12/11
Local identification of nonparametric and semiparametric models

In parametric models a sufficient condition for local identification is that the vector of moment is… Continue reading.

Xiaohong Chen, Victor Chernozhukov, Sokbae (Simon) Lee, Whitney K. Newey
14 November 2012 | CWP37/12

Latest version

Local identification of nonparametric and semiparametric models
Xiaohong Chen, Victor Chernozhukov, Sokbae (Simon) Lee, Whitney K. Newey
1 March 2014 | Journal Article

Previous version

Local identification of nonparametric and semiparametric models
Xiaohong Chen, Victor Chernozhukov, Sokbae (Simon) Lee, Whitney K. Newey
23 May 2011 | CWP17/11
Intersection bounds: estimation and inference

We develop a practical and novel method for inference on intersection bounds, namely bounds defined by… Continue reading.

Victor Chernozhukov, Sokbae (Simon) Lee, Adam Rosen
17 October 2012 | CWP33/12

Latest version

Intersection bounds: estimation and inference
Victor Chernozhukov, Sokbae (Simon) Lee, Adam Rosen
1 March 2013 | Journal Article

Previous version

Intersection bounds: estimation and inference
Victor Chernozhukov, Sokbae (Simon) Lee, Adam Rosen
4 November 2011 | CWP34/11
Uniform confidence bands for functions estimated nonparametrically with instrumental variables

This paper is concerned with developing uniform confidence bands for functions estimated nonparametrically with instrumental variables…. Continue reading.

Joel L. Horowitz, Sokbae (Simon) Lee
30 June 2012 | Journal Article

Previous version

Does it matter who responded to the survey? Trends in the U.S. gender earnings gap revisited

Studies have shown a decreasing trend in the U.S. gender earnings gap since the 1980s. The… Continue reading.

Jungmin Lee, Sokbae (Simon) Lee
31 January 2012 | Journal Article

Previous version

Testing for threshold effects in regression models

In this article, we develop a general method for testing threshold effects in regression models, using… Continue reading.

Sokbae (Simon) Lee, Myung Hwan Seo, Youngki Shin
31 December 2011 | Journal Article

Previous version

Testing for threshold effects in regression models
Sokbae (Simon) Lee, Myung Hwan Seo, Youngki Shin
3 December 2010 | CWP36/10
Intersection bounds: estimation and inference

We develop a practical and novel method for inference on intersection bounds, namely bounds defined by… Continue reading.

Victor Chernozhukov, Sokbae (Simon) Lee, Adam Rosen
4 November 2011 | CWP34/11

Latest version

Intersection bounds: estimation and inference
Victor Chernozhukov, Sokbae (Simon) Lee, Adam Rosen
17 October 2012 | CWP33/12

Previous version

Intersection Bounds: estimation and inference
Victor Chernozhukov, Sokbae (Simon) Lee, Adam Rosen
28 July 2009 | CWP19/09
Trends in quality-adjusted skill premia in the United States, 1960-2000

This paper presents new evidence that increases in college enrollment lead to a decline in the… Continue reading.

Pedro Carneiro, Sokbae (Simon) Lee
30 October 2011 | Journal Article

Previous version

Trends in quality-adjusted skill premia in the United States, 1960-2000
Pedro Carneiro, Sokbae (Simon) Lee
23 January 2009 | CWP02/09
Is distance dying at last? Falling home bias in fixed effects models of patent citations

We examine the “home bias” of knowledge spillovers (the idea that knowledge spreads more slowly over… Continue reading.

Rachel Griffith, Sokbae (Simon) Lee, John Van Reenen
24 May 2011 | CWP18/11
Local identification of nonparametric and semiparametric models

In parametric models a sufficient condition for local identification is that the vector of moment conditions… Continue reading.

Xiaohong Chen, Victor Chernozhukov, Sokbae (Simon) Lee, Whitney K. Newey
23 May 2011 | CWP17/11

Latest version

Local identification of nonparametric and semiparametric models
Xiaohong Chen, Victor Chernozhukov, Sokbae (Simon) Lee, Whitney K. Newey
14 November 2012 | CWP37/12