PERC Staff

Dennis W. Jansen


Dr. Dennis W. Jansen is a Professor of Economics and Director of the Private Enterprise Research Center at Texas A&M University.  He holds the Mary Julia and George R. Jordan Jr. Professorship of Public Policy.  He received his Ph.D. in Economics from the University of North Carolina at Chapel Hill and his undergraduate degree in economics and mathematics from St. Louis University.  His research has focused on macroeconomics, financial economics, forecasting, and the economics of education.  He has received grants from the National Science Foundation and from various agencies in the state of Texas. He has worked for the Texas Education Agency to study the Texas school finance formula, and to evaluate both the Texas Educator Excellence Grant program and the Texas District Award for Teacher Excellence program.  Professor Jansen was a Fulbright Scholar in 2008, lecturing and conducting research in Ireland.  He has chaired the doctoral dissertations of over forty students who hold jobs in academia, government and business in the U.S. and throughout the world.  He is a regular participant at academic conferences.  At Texas A&M University Dr. Jansen has served in various administrative posts including Department Head, Director of Graduate Programs, and Director of Undergraduate Programs.  Dr. Jansen has held research or teaching positions at the National University of Ireland-Galway, the Federal Reserve Bank of St. Louis, Indiana University-Bloomington, North Carolina State University, Korea University, Southwest University of Finance and Economics (China), Erasmus University Rotterdam, Catholic University Leuven, and Maastricht University.  He has published over seventy research papers in professional journals and books, two textbooks, and numerous other writings. Email Dennis at

Dr. Jansen's CV

Andrew J. Rettenmaier

Executive Associate Director

Andrew J. Rettenmaier is the Executive Associate Director at the Private Enterprise Research Center at Texas A&M University. He received a B.S. in Finance and a Ph.D. in Economics from Texas A&M University. His research focuses on income and wealth inequality, labor economics, health care policy, and elderly entitlement programs. He co-authored The Economics of Medicare Reform, W. E. Upjohn Institute for Employment Research, 2000 and The Diagnosis and Treatment of Medicare, AEI Press 2007. He was an editor of Medicare Reform: Issues and Answers, published in 1999 by the University of Chicago Press. He has been co-principal investigator on several research grants, has published numerous public policy monographs and academic articles. He has published in Journal of Public Economics, Journal of Health Economics, Health Economics, Southern Economic Journal, and Economic Inquiry, among other economic journals. Email Andy at

Dr. Rettenmaier's CV

Liqun Liu

Research Scientist

Liqun Liu is a Research Scientist at the Private Enterprise Research Center. He joined the Center after earning his Ph.D. in Economics from Texas A&M University in 1998. Originally from China, he also received a B.S. and M.S. in Applied Mathematics from Huazhong University of Science and Technology. Dr. Liu's primary research interests are public policy analysis, cost-benefit analysis, and decision analysis. He has published in Economic Inquiry, Economics Letters, European Economic Review, Journal of Economic Theory, Journal of Public Economic Theory, Journal of Public Economics, Journal of Risk and Uncertainty, Journal of Theoretical and Institutional Economics, National Tax Journal, and Southern Economic Journal, among other economics journals. He served as an associate editor for Journal of Economic Behavior and Organization from 2012 to 2016. In September, 2017, Dr. Liu and his co-authors received the SCOR - Geneva Risk and Insurance Review Best Paper Award for "Tradeoffs for Downside Risk-Averse Decision-Makers and the Self-Protection Decision." Email Liqun at

Dr. Liu's CV

Erkmen Giray Aslim

Postdoctoral Research Associate

Erkmen Giray Aslim is a Postdoctoral Research Associate at the Private Enterprise Research Center (PERC) at Texas A&M University. He received his Ph.D. in Economics from Lehigh University and M.A in Economics from the University of New Hampshire, as well as M.A. and B.A. in Economics from Bilkent University.  Dr. Aslim’s research has focused on applied microeconomics, health and labor economics, and public finance. His recent work explores the labor market and outreach effects of the Affordable Care Act’s Medicaid expansion. He has also done research on maternity leave policies and their impact on female labor force participation in emerging markets. Dr. Aslim was one of the recipients of Stout Dissertation Award at Lehigh University, a university-level award that recognizes significant scholarly achievement in a dissertation.  During his doctoral studies, he also received awards on leadership, teaching, and research, including the College of Business and Economics Leadership Award, Teaching Assistant of the Year Award, and Warren York Fellowship. Prior to joining PERC, he also taught a variety of courses at Lehigh University. Email Erkmen at

Dr. Aslim's CV

Han Yu

Postdoctoral Research Associate

Han Yu is a Postdoctoral Research Associate at the Private Enterprise Research Center, located at Texas A&M University.  He received his Ph.D. and M.S. in Economics from Louisiana State University.  He also received a M.S. from Central University of Finance and Economics and a B.S. in Information and Computing Science from Suzhou University of Sci and Tech while studying in China.  While in his PhD program, he received several awards and grants including the Dean’s Awards for Summer Research and a grant from the IRES Graduate Student Workshop from Chapman University. Dr. Han Yu’s research focus is in applied microeconomics, with a special focus on economics of education and cultural economics. Most recently, his research analyze the association between self-perceived relative income and life satisfaction, as well as the effect of the recent curriculum reform in China on various outcomes of students, including educational attainment, physical and mental health, and subjective well-being. His work on the educational outcomes of the “Dragons” born in China has received considerable media attention with coverage in The Wall Street Journal, The NBER Digest, The Economist, Bloomberg, National Public Radio, Quartz, among others. Another line of his research investigates the impact of natural resource shocks on employment and earnings differentials among different types of workers in the U.S. Email Han at

Dr. Han Yu's CV, website


Carlos Navarro

Senior Research Associate

Carlos joined PERC in the spring of 2018. He received his B.A. in Economics from the University of Texas- Pan American and a Master's of International Affairs from The Bush School of Government and Public Service at Texas A&M University where he focused his studies in Development Economics, Trade and Migration.  While at the Bush School, Carlos was a recipient of The U.S. Congress-George H.W. Bush Fellowship (104th Congressional Fellowship). In the spring of 2017, Carlos presented his Bush School Capstone project, “Comparative Analysis of U.S., Russian, and Chinese activities in Latin America and the Caribbean,” to the U.S. Southern Command. His current research at PERC is focused on local-level economic indexes and migration in the United States with special attention on border commuting zones. Email Carlos at

Anjelica Lopez

Administrative Coordinator II

Angie joined PERC in the fall of 2015.  A B.C.S. area native, she provides all administrative functions, including event planning, human resources tasks, and scheduling. Email Angie at

Ashley Bullock

Communications Coordinator

Ashley has been a part of PERC since summer, 2017.  She is originally from the midwest and graduated with a Bachelors of Science degree in Marketing from Southern Illinois University. Mrs. Bullock is responsible for media outreach, event planning and department communications. Email Ashley at