I specialize in moral and political philosophy, moral psychology, and experimental philosophy.  My work is animated by an interest in the role that empirical facts should play in the evaluation of normative concepts.  I argue that moral and political philosophers should be (and have often been, explicitly or implicitly) interested in the fruitfulness of these concepts – how well they help us to solve practical problems.  This argument provides a novel defense of the positive program in experimental philosophy.  I am also interested in how political philosophy should take facts about the real world into account.  In particular, the fact that citizens and non-citizens of democratic states stand in relationships with one another generates stringent duties to implement more open immigration policies.  I hold that philosophers have an important role to play in empirical research on moral and political issues, and that traditional and empirical methods can be brought together to illuminate these issues.


Peer-Reviewed Articles
“Experimental Philosophy and the Fruitfulness of Normative Concepts.” Philosophical Studies, forthcoming. (final version, .pdf)

“Entry by Birth Alone?: Rawlsian Egalitarianism and the Basic Right to Invite.” Social Theory and Practice, forthcoming. (final version, .pdf)

(w/ N. Southwood) “How to Cancel the Knobe Effect: The Role of Sufficiently Strong Moral Censure.” American Philosophical Quarterly, forthcoming.

(w/ J. Bruner) “The Varieties of Impartiality, or, Would an Egalitarian Endorse the Veil?” Philosophical Studies, forthcoming. (final version, .pdf)

“In Defense of a Category-Based System for Unification Admissions.” Journal of Moral Philosophy, Vol. 15, No. 5, 2018, 572-598. (final version, .pdf)

“Immigration Policy and Identification Across Borders.” Journal of Ethics and Social Philosophy, Vol. 12, No. 3, 2017, 280-303. (final version, .pdf)

(w/ C. Barry) “Moral Judgment and the Duties of Innocent Beneficiaries of Injustice.” Review of Philosophy and Psychology, Vol. 8, No. 3, 2017, 671-686. (final version, .pdf)

(w/ C. Barry and G. Øverland) “Doing, Allowing, and Enabling Harm: An Empirical Investigation.” In Oxford Studies in Experimental Philosophy, Vol. 1, eds. T. Lombrozo, J. Knobe, and S. Nichols, Oxford: Oxford University Press, 2014, 62-90. (final version, .pdf)

Invited Articles
“Kantian Themes in Ethics and International Relations.” In The Routledge Handbook of Ethics and International Relations, eds. B. Steele and E. Heinze, New York: Routledge Press, 2018, 30-42.

“Unification Admissions and Skilled Worker Migration.” In Fair Work: Ethics, Social Policy, and Globalization, ed. K.P. Schaff, Lanham, MD: Rowman and Littlefield, 2017, 95-112.

“The Focus on Health Capability and Role of States in Ruger’s Global Health Justice Framework.” The American Journal of Bioethics, 12:12 (2012), 57-59. (final version, .pdf)

Book Review
“Review of David Miller’s Strangers in Our Midst: The Political Philosophy of Immigration.” Ethics, Vol. 128, No. 1, October 2017, 269-274. (final version, .pdf)

Works in Progress

(w/ Peter Singer, Paul Slovic, Joshua Greene, Daniel Västfjäll, and Marcus Mayorga) “Comparing the Effect of Rational and Emotional Appeals on Donation Behavior” (revise and resubmit)

(w/ Nicholas Southwood) “Feasibility and the Problem of Normative Entanglement” (under review)

(w/ Luke Buckland, David Rodríguez-Arías, and Carissa Véliz) “Testing the Motivational Strength of Positive and Negative Duty Arguments Regarding Global Poverty” (under review)

“Domestic Justice and Refugee Prioritization” (in preparation)

“Open Borders and Feasibility” (in preparation)

Research Collaborators

Christian Barry

Justin Bruner

Luke Buckland

Joshua Greene

Gerhard Øverland (1964-2014)

David Rodríguez-Arías

Peter Singer

Paul Slovic

Nicholas Southwood

Daniel Västfjäll

Carissa Véliz