Yuxiu Zhang

Yale School of Public Health
60 College St
New Haven, CT 06510

E-Mail: EmailAddress: hidden: you can email any NBER-related person as first underscore last at nber dot org
Institutional Affiliation: Yale University

NBER Working Papers and Publications

July 2013The Consequences of Friendships: Evidence on the Effect of Social Relationships in School on Academic Achievement
with Jason M. Fletcher, Stephen L. Ross: w19215
This paper examines the impact of youth friendship links on student’s own academic performance (grade point average) using the Add Health. We estimate a reduced form, high dimensional fixed effects model of within cohort or grade friendship links, and use this model to predict each student’s number of friends whose mothers have a four year college degree. The effects of friendship links are identified using across-cohort, within school variation in demographic composition of the student’s cohort or grade. We find that increases in number of friendship links with students whose mothers are college educated raises grade point average among girls, but not among boys. Additional analyses suggest a positive view of the school environment and a perception of one’s self as functioning well in tha...

Published: Jason M. Fletcher & Stephen L. Ross & Yuxiu Zhang, 2020. "The Consequences of Friendships: Evidence on the Effect of Social Relationships in School on Academic Achievement," Journal of Urban Economics, . citation courtesy of

August 2012Back to the Future? Abortion Before & After Roe
with Theodore J. Joyce, Ruoding Tan: w18338
Next year marks the 40th anniversary of the U.S. Supreme Court decision in Roe v. Wade. We use unique data on abortions performed in New York State from 1971-1975 to analyze the impact of legalized abortion in New York on abortion and birth rates of non-residents. We estimate that abortion rates declined by 12.0 percent for every hundred miles a woman lived from New York in the years before Roe. If Roe were overturned average travel distance to the nearest abortion provider would increase by 157 miles in the 31 states expected to prohibit abortion. Under this scenario abortion rates would fall by 14.9 percent nationally, resulting in at most, 178,800 additional births or 4.2 percent of the U.S. total in 2008. A ban in 17 states would result in a 6.0 percent decline in abortions and at m...

Published: Journal of Health Economics Volume 32, Issue 5, September 2013, Pages 804–815 Cover image Abortion before & after Roe Ted Joycea, , , Ruoding Tanb, , Yuxiu Zhangc,

NBER Videos

National Bureau of Economic Research, 1050 Massachusetts Ave., Cambridge, MA 02138; 617-868-3900; email:

Contact Us