Nagel. Radcliff followed with a reply to Erikson. Radcliff's work on happiness and the welfare state has been the subject of an extensive critique by the political scientist Tom Rice and colleagues, who in particular questions the direction of causality in Radcliff's empirical results, suggesting that it may be that happier citizens are simply more supportive of the welfare state rather than the welfare state producing happier people. Radcliff gives several arguments against this 'reverse casualty' hypothesis in his book The Political Economy of Human Happiness: How Voters' Choices Determine the Quality of Life. Cambridge University Press; (2013) , including a demonstration that individuals' support for welfare in fact correlates negatively with life satisfaction. Non-academic writings Radcliff wrote Understanding Zen (Charles Tuttle, Boston, 1993) as an accessible introduction to Zen in particular and Eastern philosophy more generally. It draws upon both the modern philosophy of science and familiar strands of Western philosophy, such as existentialism. A German language edition entitled Zen Denken was published by Herder/Spektrum (Freiburg: 1995). References External links University of Notre Dame: Faculty: Benjamin Radcliff Rooney Center for the Study of American Democracy Higgins Labor Studies Program Robert Penn Warren Center for the Humanities at Vanderbilt University 1963 births American political scientists University of Illinois Urbana-Champaign alumni University of Notre Dame faculty Living people Place of birth missing (living people)