Many mainstream economists and policy experts assume that Contingent Valuation (CV) methodologies report a legitimate monetary valuation of a social proposal. An alternative interpretation put forward by Kahneman and colleagues suggest that responses to CV surveys represent a general offer of contribution towards a social project. The contribution model framework conceptualises Willingness to P...

The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Maryland. Abstract Road pricing has been advocated as an efficient travel demand management to alleviate congestion since the seminal work by Pigou (1920) and Kni...

Using data from a 1988 survey of business school graduates, the authors analyze gender differentials in earnings by form of pay-total pay, base pay, and contingent pay-with controls for human capital, occupation,job level, and individual characteristics. The results indicate that within narrowly defined occupations and jobs, most of the unexplained difference in total pay between the men and wo...