Commented on Daniel Immerman's paper, "Pluralist Accounts of Knowledge and the Threshold Problem," American Philosophical Association, Pacific Division Meeting, San Diego, CA, March 2018.

"The Objects of Memorial Experience," Southern Society for Philosophy and Psychology, Savannah, GA, March 2017.

Commented on Jared Liebergen's paper, "The Conservative's Escape from the Circle," Pittsburgh Area Philosophy Colloquium, Pittsburgh, PA, September 2016.

Commented on Evan Riley's paper, "Understanding Knowing How," Ohio Philosophical Association Annual Meeting, Otterbein University, Westerville, OH, April 2016.

Commented on Eli Alshanetsky's paper, "Articulation and Self-Knowledge," American Philosophical Association, Pacific Division Meeting, San Francisco, CA, March 2016.

"Disjunctivism and Experiential Memory," Pittsburgh Area Philosophy Colloquium, Working Papers Group, September 2014.

Commented on Nathan Oseroff's paper, "Why Is It That, If Counter-Closure is Accepted, There Is A Problem for Inferential Knowledge?," Pittsburgh Area Philosophy Colloquium, September 2014.


"Personal Identity and Moral Identity of Persons in Samuel Clarke," Personal Identity in the History of Philosophy Conference, University of Melbourne, Australia, August 2016.

"Five Criteria of Moral Facts: An 18th Century Philosophical Argument and 21st Century Empirical Evidences," University of Otago, New Zealand, August 2016.

"Five Theories of Neuroethics,"International Conference on Ethics Across the Curriculum, Clemson University, Greenville, SC, October 2015 (not presented due to illness).

"Science-Fiction Embedded in Neuroethics: Mindlessness and Ethical Nihilism," Cognition and Neuroethics in Science Fiction International Conference, Center for Cognition and Neuroethics, University of Michigan-Flint, March 2015.

"What Ought to be Done with Research Risk Assessment and Possible Conflict Interest: Objective Ethical Truth-Telling," 3rd World NIH Conference on Research Integrity, Montreal, Canada, May 2013 (partially funded by NIH).


"Memory Color and Color Constancy," (keynote speaker) Current Philosophy of Psychology: 7th Ernst Mach Workshop, Institute of Philosophy of the Czech Academy of Sciences, Prague, Czech Republic, May 2018.

"What Can Vision Science Tell Us about Primitivism?," Primitive Colors and Non-Reductive Minds Conference, New Directions in the Study of Mind, May 2017.

"Object Sexuality and Spectrum Autism," Ohio Philosophical Association, Ohio Northern University, April 2017.

"Is Object Sexuality a Type of Synesthesia?," Workshop on Synesthesia and Multisensory Integration, Center for Philosophical Psychology, University of Antwerp, Belgium, November 2016.

"Cognitive Penetration and Top-Down Modulation," Minds Online Conference, September 2016.

"I Think It's Going to Hurt: The Effects of Cognition on Pain Perception," (with Bennett Schwartz), Southern Society of Philosophy and Psychology Conference, March 2016, and Ohio Philosophical Association, Otterbein University, April 2016.

"Cognitive Penetration in Visual Perception," Virginia Philosophical Association Conference, Virginia Commonwealth University, October 2015.

"When Color Contrast Fails: the Blue/Black Dress," The University of Wooster, Wooster, OH, September 2015.

"What Can Schizophrenia Teach Us about the Cognitive Penetration of Visual Experience?," Cognitio 2015: The Cognitive Science of Difference and Potentialities, University of Quebec, Montreal, Canada, June 2015.

"Color Penetration and Top-Down Processing in Visual Perception," Southern Society of Philosophy and Psychology Conference, April 2015.

Commented on Scott Simmons' and Mark Wells' paper "The Easy Defense of the Feathered Apes (and the Hard Problems it Raises)," Ohio Philosophical Association, Baldwin Wallace University, April 2015.

"Time and Time Perception (co-authored w/Berit Brogaard), Philosophy of Time Society Conference, University of Milan, Garganao, Italy, May 2014; Ohio Philosophical Association, Kenyon College, April 2014.

"Cognitive Penetration and the Nature of Experience," American Philosophical Association, Eastern Division Meeting, December 2013; Ohio Philosophical Association Meeting, Denison University, Granville, OH, April 2013; North Carolina Philosophical Association, 2013.


"The Rule of Law and Substantive Liberty," Long Island Philosophical Society conference, St. John's University, Queens, NY, April 2015.

"Jury Nullification and Libertarianism" and "Jury Nullification and Criminal Procedure," Hanover College, Hanover, IN, Fall 2013 (invited speaker, funded by Hanover College thru Charles Koch Foundation grant).

Commented on Danny Pearlberg's, "Making Sense of the Different Senses of Explanation," Ohio Philosophical Association, Denison University, Granville, OH, April 2013.


"Comments on Draft Proposed Regulatory Framework for Fecal Microbiota Transplantation," University of Maryland, Carey School of Law, Baltimore, MD, December 2016.

"Philosophy of Biology and Fecal Microbiotal Therapy Regulation," Case Western Reserve University, Cleveland, OH, October 2016.

"Moral Responsibility and Moral Motivation," 9th Annual International Ethics Forum, Pedagogiczny University, Krakow, Poland, June 2016.

"Regulating Fecal Transplants: No Subtitle Required," Stanford Center for Biomedical Ethics, Stanford, CA, December 2015.

"Practical Ethics and Global Ethics of Peter Singer," Great Ethical Theories of Modernity, Institute of Philosophy, University of Warmia and Mazury, Olsztyn, Poland, June 2015.

"Current Research in Philosophy of Paleobiology," Perspectives on Stephen Jay Gould, Marine Biological Laboratory, Woods Hole, MA, May 2015.

"Underdetermination in Historical Science," Graduate Center Colloquium Series, City University of New York, New York, NY, May 2015.

"Diagrammatic Reasoning in Paleontology," Diagrams as Vehicles for Scientific Reasoning Workshop, Center for Philosophy of Science, University of Pittsburgh, Pittsburgh, PA, April 2015.

"Methodological and Evolutionary Perspectives on the Human Microbiome," American Association for the Advancement of Science, San Jose, CA, February 2015.

"Tools, Theories, and the Microbiome," Bioethics Works-in-Progress Series, Case Western Reserve Medical School, Cleveland, OH, October 2014.

"Underdetermination Model Selection, and Evolutionary Trends," Department of Epistemology, Institute of Philosophy, Jagiellonian University, Krakow, Poland, June 2014.

"American Popular Culture: A Philosophical Perspective," Opole Conference of Teachers of English: Culture and the Realities of English-Speaking Countries, U.S. Consulate General, Krakow, Poland, November 2013.  Also presented at American Experience--Experience America, Katowice Center for Excellence in Teaching, Katowice, Poland, March 2014, and at Rzeszow Polytechnic, Rzeszow, Poland, May 2014.

"Philosophy of Science and Environmental Philosophy," Fulbright Fellows Presentations, Collegium Maius, Krakow, Poland, October 2013 (funded by Fulbright Fellowship).

"Methodology and Ontology in the Human Microbiome Project," International Society for the History, Philosophy, and Social Sciences of Biology (ISHPSSB) annual meeting, Montpellier, France, July 2013. (invited speaker, funded by NIH).

"Our Biomes, Our Selves," Center for Genetic Research Ethics and Law, Case Western Reserve University, Cleveland, OH, April 2013 (invited speaker).

"The Symbiotic Self," Workshop: Engineering the Human Microbiome, Ethical Issues of Synthetic Biology, Hastings Center, Garrison, NY, March 2013 (invited speaker, funded by Hastings Center).


"Nature, City and Intentionality," XII International Ontology Congress, San Sebastian, Spain, October 2016.

"Dispelling Some Myths about Aquinas' Psychology and Metaphysics," Columbia University, New York, NY, August 2013.

"Illogical Logicians: The Analytic Ideal of Pure Formalism and Absolute Objectivity," Columbia University, New York, NY, May 2013.


"Is There an American Ethnicity?," Global Studies Conference on Globalization, Race, and the New Nationalism, Howard University, Washington, DC, June 2018.

"What Role Do Whites Play in Supporting Black Power, Black Life, and Black Thought in an Era of Renewed Anti-Black Oppression?," Philosophy Born of Struggle Conference, Texas A&M, College Station, TX, November 2016.

"Philosophy's Dirty Little Secret: Philosophers of Race are Trading on Racial Capitalism," Society for Phenomenology and Existential Philosophy, Salt Lake City, UT, October 2016.


"The Epicurean Garden," Earth Perfect? Nature, Utopia and the Garden Symposium, University of Delaware, Newark, DE, June 2013.