Nicolaus Tideman Virginia Tech   435 Big Sky Trail 435 Big Sky Trail Blacksburg, VA 24060 United States   ntideman@vt.edu   http://www.econ.vt.edu/faculty/2008vitas_research/tidemanwebpage_files/tidemanhome1.htm           JEL Areas: D7 : Analysis of Collective Decision-Making: General D6 : Welfare Economics: General