Abstract Wineries in the “old world” export almost 40% of their production. This study analyzes influence vertical and horizontal networks on performance. We draw a sample 183 Spanish wineries examine main independent variables using two-step Heckman model. find positive effects and—at somewhat lower level—downstream (JEL Classifications: L66, M16, Q13)

Heckman is also a Senior Fellow at the American Bar Foundation. Vytlacil is a Sloan Fellow at the Department of Economics, University of Chicago. The essential identi cation results in this paper are presented in Heckman (1982, 1995) which have been widely circulated. This research is supported by NSF-SBR-97-09-873 and the American Bar Foundation. We thank Richard Blundell and Chris Taber for c...

Crop insurance is a risk management tool with the potential of dealing with risk more efficiently, the study uses a dichotomous contingent valuation method to elicit the willingness to pay for crop insurance among cereal farmers in the Eastern region of Ghana. The study employed descriptive statistical techniques to analyse primary data obtained from 208 sampled farmers in the region. Approxima...

Correspondence studies can identify the extent of discrimination in hiring as typically defined by the law, which includes discrimination against ethnic minorities and females. However, as Heckman and Siegelman (1993) show, if employers act upon a group difference in the variance of unobserved variables, this measure of discrimination may not be very informative. This issue has essentially been...