Work in progress:

• Investments into Prevention of Disasters: The Case of Earthquakes in California. Three-year funded NSF research grant (approved), 2006-2009.

• Environmental Altruism, Evidence from Germany. This research uses a unique 60GB data set of 'speeding behavior' on highways. I analyze ‘voluntary speed limits’ employing a regression discontinuity design.

• The Impact of Drug Policies on Crime. This work uses changes in state precursor laws in 2005-2006 that limit access to ‘Sudafed’ to disentangle the effect of drug (methamphetamine) use on crime. See abstract, with G. Rafert, 2006.

Peer Reviewed Articles:

• Symmetric Positive Equilibrium Problem: a framework for rationalizing economic behavior with limited information: Comment. American Journal of Agricultural Economics, 85(4), 2003, pp. 1078-81, with W. Britz, and T. Heckelei.

• Estimation of constrained optimisation models for agricultural supply analysis based on generalised maximum entropy. European Review of Agricultural Economics, Vol 30 (1), pp. 1–24, 2003, with T. Heckelei.

• Willingness to Pay for Clean Air in Chile. English version presented at Econometric Society Meeting, Sao Paulo, 2002. In Spanish: Disposición a Pagar por Bienes Ambientales en Chile: Concepto y Aplicación. Revista interdisciplinar de Gestión Ambiental, 61(6), January 2004, pp. 42-48, with Pablo Villalobos. 

• Determinants to Switch from Conventional to Biological Farming and the Concept of Path Dependence. (published in German). Agrarwirtschaft, Vol. 50-7, pp. 433-38, 2001, with U. Latacz-Lohmann and G. Recke. [download the abstract in English]

• Path Dependence and Implementation Strategies for Integrated Pest Management. Quarterly Journal of International Agriculture, Vol. 39, No.2, pp. 149-171, 2000. with G. Recke

Book Contributions:

• Heckelei, T. and H. Wolff (2002): Ansätze zur (Auf-)Lösung eines alten Methodenstreits: Ökonometrische Spezifikation von Programmierungsmodellen zur Agrarangebotsanalyse. In: Brockmeier, M., F. Isermeyer and S. v Cramon Taubadel, (Eds.): Liberalisierung des Weltagrarhandels – Strategien und Konsequenzen. Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V., Band 37, Münster-Hiltrup, pp. 377-388. [download]

• Recke, R., U. Latacz-Lohmann and H. Wolff (2002): Pfadabhängigkeit und Umstellung auf ökologischen Landbau - eine empirische Studie. In: Brockmeier, M., F. Isermeyer and S. v Cramon Taubadel, (Eds.): Liberalisierung des Weltagrarhandels – Strategien und Konsequenzen. Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V., Band 37, Münster-Hiltrup, pp. 503-508. [download]

• Sander, R., H. Wolff, W. Britz and Th. Heckelei (2000): Die Veränderung der regionalen Wettbewerbsfähigkeit der Ölsaaten- und Getreideproduktion unter dem Einfluß der GAP 1992 - Analyse auf Grundlage einer EU-weiten, regionalisierten Datenbasis. In: V. Alvensleben, R., Koester, U. and C. Langbehn: Wettbewerbsfähigkeit und Unternehmertum in der Land- und Ernährungswirtschaft, Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V., Band 36, pp. 21-28, Münster-Hiltrup. [A draft - presented at the 40th conference of GeWiSoLa 1999 in Kiel, October 1999 - can be downloaded here.]

• Wolff, H. (1999): Economics of Tomato Production with special Reference to Aspects of Plant Protection: A Case Study of Two Tomato Production Systems in Brong-Ahafo Region, Ghana - CD included with two Scenario Programmes written in Excel and Visual Basic, prepared for: Ghanaian-German Project for Integrated Crop Protection, GTZ, Eschborn. 131 pages.

Other Papers:

• Disposición a Pagar para un Fondo de Protección Ambiental en Zonas Rurales de Chile - Concepto y Aplicación. Conference 7° Encuentro Científico sobre el Medio Ambiente "El Circulo Virtuoso del Desarrollo Sustentable" 28 al 30 de Mayo 2002.[download en español], with P. Villalobos

• Heckelei, T. and H. Wolff (2001): A Methodological Note on the Estimation of Programming Models. Technical Working Paper 104 of the International Marketing Program for Agricultural Commodities & Trade (IMPACT), Washington State University, Pullman.[download]

Conferences:

I have been presenting my work at the following conferences:

• Occasional Workshop on Environmental and Resource Economics, Santa Barbara, 2006
• Seminar on Bayesian Inference in Econometrics and Statistics, The University of Iowa, 2006
• Econometric Society North American Summer Meeting, Brown University, 2004
• Econometric Society European Meeting, Madrid, 2004
• American Agricultural Economics Association (AAEA) Meeting, 2004
• Econometric Society Latin American Meeting, Sao Paulo, Brasil, 2002
• Tagung der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaus (GeWiSoLa 2001)

Other Presentations:

• Environmental and Resource Economics Seminar, University of California, Berkeley, 2006
• Department of Agricultural Politics, University of Kiel, Germany, 2006
• Summer Econometrics Workshop, University of California, Berkeley, 2004
• Environmental and Resource Economics Seminar, University of California, Berkeley, 2003