Raff Donelson
Pennsylvania State University
Ivar Hannikainen
Pontifícia Universidade Católica do Rio de Janeiro
The experimental turn in philosophy has reached several sub-fields including ethics, epistemology, and metaphysics. This paper is among the first to apply experimental techniques to questions in the philosophy of law. Specifically, we examine Lon Fuller's procedural natural law theory. Fuller famously claimed that legal systems necessarily observe eight principles he called "the inner morality of law." We evaluate Fuller's claim by surveying both ordinary people and legal experts about their intuitions about legal systems. We conclude that, at best, we should be skeptical of Fuller's inner morality of law in light of the experimental data.
Keywords natural law theory  experimental jurisprudence  experimental philosophy  Lon Fuller  procedural natural law theory
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References found in this work BETA

Law’s Empire.R. Dworkin - 1986 - Harvard University Press.
Natural Law and Natural Rights.John Finnis - 1979 - Oxford University Press.
Experimental Philosophy and Philosophical Intuition.Ernest Sosa - 2007 - Philosophical Studies 132 (1):99-107.
Natural Law and Natural Rights.John Finnis - 1980 - Oxford University Press UK.

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Experimental Insights for International Legal Theory.Anne van Aaken - 2019 - European Journal of International Law 30 (4):1237–1262.

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