Analyzing Cost Efficient Production Behavior Under Economies of Scope: A Nonparametric Methodology
KU Leuven; Erasmus Research Institute of Management (ERIM)
Bram De Rock
Katholieke Universiteit Leuven - Campus Kortrijk (KULAK) - Subfaculty of Economics and Applied Economics
Tilburg University - CentER; Institute for the Study of Labor (IZA)
IZA Discussion Paper No. 2319
CentER Discussion Paper Series No. 2006-81
In designing a production model for firms that generate multiple outputs, we take as a starting point that such multi-output production refers to economies of scope, which in turn originate from joint input use and input externalities. We provide a nonparametric characterization of cost efficient behavior under these conditions, and subsequently institute necessary and sufficient conditions for data consistency with such efficient behavior that only include observed firm demand and supply data. We illustrate our methodology by examining the cost efficiency of research programs in Economics and Business Management faculties of Dutch universities. This application shows that the proposed methodology may entail robust conclusions regarding cost efficiency differences between universities within specific specialization areas, even when using shadow prices to evaluate the different inputs.
Number of Pages in PDF File: 32
Keywords: production behavior, multi-product firms, input externalities, joint input use, economies of scope, nonparametric tests
JEL Classification: C12, C14, D21, P32, Q12working papers series
Date posted: September 17, 2006
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