University of Massachusetts Amherst

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Christian Rojas
Industrial Organization and Experimental Economics
205B Stockbridge Hall
University of Massachusetts
Amherst, MA 01003

My interests are in Industrial Organization, Applied Microeconomics and Experimental Economics.

Working Papers

C. Rojas. 2015. How Much is an Incoming Message Worth? Estimating the Call Externality, (submitted).

F. Colantuoni, C. Rojas and E. Wang. 2014. “Heterogeneous behavior, obesity and storability in soft drink consumption: A dynamic demand model,” (in resubmission at AJAE)

C. Bauner, N. Lavoie and C. Rojas. 2014. “Effects of Technological Change on Vertical Product Differentiation in the Presence of Buyer and Seller Market Power,” (in resubmission at ERAE)

Work in Progress

C. Rojas. 2013. “Focal Points and Collusion in the Lab.”

C. Rojas. 2012. “The Effects of Vertical Integration: An Empirical Analysis of the Soft Drinks Industry.”

Published Papers

C. Rojas. 2015. The Welfare Effects of Banning Off-net/On-net Price Differentials in the Mobile Sector. Telecommunications Policy, 39, 590-607.

E. Wang, C. Rojas and C. Bauner. 2014 “Evolution of Nutritional Quality in the U.S.: Evidence from the Ready-to-Eat Cereal Industry,” Economics Letters, 133, 105-8

F. Colantuoni and C. Rojas. 2014. “The Impact of Soda Sales Taxes on Consumption: Evidence from Scanner Data,” Contemporary Economic Policy, 33, 714-30.

D. Huang and C. Rojas. 2014. “Eliminating the Outside Good Bias in Logit Models of Demand with Aggregate Data” Review of Marketing Science, 12, 1-36.

D. Huang and C. Rojas. 2013. “The Outside Good Bias in Logit Models of Demand with Aggregate Data.” Economics Bulletin, 33, 1.

L. Baraldi and C. Rojas. 2012. “Cost Pass-Through with Network Externalities.”  International Journal of Business & Economics, 10, 3, 177-99.

C. Rojas, N. Lavoie and S. Wang.  2012. “Buyer Market Power and Vertically Differentiated Retailers.”Journal of Agricultural and Food Industrial Organization, 10 (1). DOI: 10.1515/1542-0485.1338

C. Rojas. 2012. “The Effect of Mandated Exclusive Territories in the US Brewing Industry.”  B.E. Journal of Economic Analysis & Policy, 12 (1). DOI: 10.1515/1935-1682.3088

C. Rojas. 2012. The Role of Information and Monitoring on Collusion. RAND Journal of Economics, 43, 78-109.

Eckel, P. Grossman, K. Johnson, A. de Oliveira, C. Rojas and R. Wilson. 2012 “On the Development of Risk Preferences: Experimental Evidence.” Journal of Risk & Uncertainty, 45, 265-92.

C. Eckel, P. Grossman, K. Johnson, A. de Oliveira, C. Rojas and R. Wilson. 2011. “Social Norms of Sharing in High School: Teen Student Giving in the Dictator Game.” Journal of Economic Behavior and Organization, 80, 603-12.

C. Rojas and T. Shi. 2011. “Tax Incidence when Quality Matters: Evidence from the Beer Market.”Journal of Agricultural and Food Industrial Organization, 9, 1-33. DOI: 10.2202/1542-0485.1353.

C. Dave, C. Eckel, C. Johnson and C. Rojas, 2010. “Eliciting Risk Preferences: When is Simple Better?” Journal of Risk and Uncertainty, 41, 219-43.

C. Rojas, 2010. “Market Power and the Lerner Index: A Classroom Experiment.” Journal of Industrial Organization Education. 5(1), 1-19.

C. Rojas. 2008. “Price Competition in U.S. Brewing.” Journal of Industrial Economics, 56, 1-31 [lead article]

C. Rojas and E. Peterson. 2008. “Demand for Differentiated Products: Price and Advertising Evidence from the U.S. beer Market.” International Journal of Industrial Organization, 26, 288-307.

D. Huang, C. Rojas and F. Bass. 2008. “What Happens when Demand is Estimated with a Misspecified Model?” Journal of Industrial Economics, 56, 809-39.

C. Rojas, A. Andino and W. Purcell. 2008 “Retailers’ Response to Wholesale Price Changes: New Evidence from Scanner-Based Quantity-Weighted Beef Prices.”Agribusiness: An International Journal, 24, 1-15 [lead article]

A. Basuchoudhary, C. Metcalf, K. Pommerenke, D. Reiley, C. Rojas, M. Rostek and J. Stodder. 2008. “Price Discrimination and Resale: A Classroom Experiment.” Journal of Economic Education, 40, 229-44.

C. Eckel, K. Johnson, C. Montmarquette and C. Rojas. 2007. “Debt Aversion and the Demand for Loans for Post-Secondary Education.” Public Finance Review, 35, 233-62.

S. Ball, C. Eckel and C. Rojas2006. “Technology Improves Learning in Large Principles of Economics Classes: Using our WITS.” American Economic Review (Papers and Proceedings), 96, 442-6.

Computer Code Available for Download

Matlab Program to Run the Epps-Singleton Two-Sample Test of Equality of Distributions.

Description of Matlab files and how to run the test (Word File)
Matlab m-file that reproduces Epps-Singleton (1986) results (numerical_example.m
Matlab m-file that runs the Epps-Singleton (1986) test, calculates p-value, and critical values (es.m)