A recent study published by Murphy et al. (2005) reported results of a meta-analysis of hypothetical bias using 28 valuation studies. The authors found a median ratio of hypothetical to actual values of 1.35 but they did not investigate the ratio of scales of the hypothetical and actual value...

Land use and cover change are very complex phenomena, based on relationships among environmental, social and economic factors. Moreover, its analysis could be highly valuable for predicting the effects of land use change and for planning a policy intervention able to steer agricultural...

The use by governments of their purchasing power to achieve social objectives is a practice that dates back to the 19th centuries when regulations were issued in both the USA and England establishing fair wages or maximum working hours per day for firms working under public contracts...