Columbus, OH. May 2019.

Columbus, OH. May 2019.

I work in the philosophy of mind, philosophy of cognitive science, and ethics. Questions I think about include: are cognitive states like thoughts and judgments a part of the stream of consciousness? What is the relationship between the phenomenal properties and the intentional properties of mental states? What is belief? Is working memory a sensory or cognitive phenomenon? Is consciousness required for being a welfare subject? Which kinds of consciousness are important for welfare subjects like us? Could AIs like language models have mental properties, e.g., beliefs or conscious states? See descriptions of the papers below.


Lennon, P. (2023). Aphantasia and Conscious Thought. In Oxford Studies in Philosophy of Mind vol. 3 (ed. Uriah Kriegel): 131-155. [preprint] [OUP page]

I have presented this work at:

The Extremes of Mind Wandering Conference, University of Edinburgh, 2021

The sensory constraint on conscious thought says that if a thought is phenomenally conscious, its phenomenal properties must be reducible to some sensory phenomenal character. I argue that the burgeoning psychological literature on aphantasia, an impoverishment in the ability to generate mental imagery, provides a counterexample to the sensory constraint. The best explanation of aphantasics’ introspective reports, neuroimaging, and task performance is that some aphantasics have conscious thoughts without sensory mental imagery. This argument against the sensory constraint supports the existence of a non-sensory phenomenology of thought. Moreover, this argument can be extended to show that this non-sensory phenomenology determines a thought content. Finally, it can potentially diagnose the disagreement over cognitive phenomenology in the philosophy of mind, as such disagreement may turn on interpersonal variation in mental imagery.


Bayne and McClelland (2016) raise the matching content challenge for proponents of cognitive phenomenology: if the phenomenal character of thought is determined by its intentional content, why is it that my conscious thought that there is a blue wall before me and my visual perception of a blue wall before me don’t share any phenomenology, despite their matching content? In this paper, I first show that the matching content challenge is not limited to proponents of cognitive phenomenology but extends to cases of cross-modal perception, threatening representationalism about consciousness in general. I then give two responses to the challenge, both of which appeal to intentional modes. The difference in intentional mode between a thought and a visual perception can either explain why we should not expect any phenomenal overlap between the two experiences, or it can make it clear why the phenomenal overlap is easy to overlook. I show that these responses are available to the representationalist about perceptual consciousness, as well as the proponent of cognitive phenomenology. The upshot is that, when it comes to the matching content challenge, both perceptual representationalism and cognitive representationalism stand on equal dialectical footing.

Lennon, P. (2023). In Defense of Cognitive Phenomenology: Meeting the Matching Content Challenge. Erkenntnis 88: 2391-2407. [preprint] [journal]

I have presented this work at:

The North Carolina Philosophical Association, 2020

The 2020 Meeting of the American Philosophical Association, Central Division, Chicago

The San Diego State Graduate Philosophy Conference, 2018

The Ohio State Graduate Student Workshop, 2018


Lennon, P. (forthcoming). Cognitive Phenomenology: In Defense of Recombination. Inquiry. [preprint] [journal]

I have presented this work at:

The Ohio State Graduate Student Workshop, 2019

The cognitive experience view of thought holds that the content of thought is determined by its cognitive-phenomenal character. Adam Pautz argues that the cognitive experience view is extensionally inadequate: it entails mix-and-match cases, where the cognitive-phenomenal properties that determine thought content are mixed and matched with different sensory-phenomenal and functional properties. Because mix-and-match cases are metaphysically impossible, Pautz argues that the cognitive experience view should be rejected. This paper defends the cognitive experience view from Pautz’s argument. I build on resources in the philosophy of mind literature to show that cognitive-phenomenal properties are modally independent from sensory-phenomenal and functional properties. The result is that mix-and-match cases, though bizarre, are possible. The possibility of mix-and-match cases allows us to move from defensive posture to a critical one: it poses problems for any program of content with rationality constraints, including Pautz’s positive view, phenomenal functionalism.


Are there rationality constraints on the mind? David Lewis argues that it’s an analytic truth that people with beliefs and desires are at least minimally rational. Some argue against rationality constraints on the mind by appealing to empirical evidence of human irrationality from the psychology of reasoning or the psychopathology of delusion. We argue that the empirical evidence is not only consistent with the thesis that human believers are minimally rational but has some tendency to confirm it. Even so, the empirical evidence provides the basis for a powerful conceivability argument, since we can imagine more extreme forms of irrationality that are continuous with human irrationality. We must abandon rationality constraints on the mind because it is conceivable that there are Lewisian madmen whose beliefs and desires are not even minimally rational.

Smithies, D., P. Lennon, and R. Samuels. (2022). Delusions and madmen: against rationality constraints on belief. Synthese 200: 1-30. [preprint] [journal]

I have presented this work at:

The Ohio State Cognitive Science Club, 2019


The phenomenal view of thought holds that thinking is an experience with phenomenal character that determines what the thought is about. This paper develops and responds to the objection that the phenomenal view is chauvinistic: it withholds thoughts from creatures that in fact have them. I develop four chauvinism objections to the phenomenal view—one from introspection, one from interpersonal differences, one from thought experiments, and one from the unconscious thought paradigm in psychology—and show that the phenomenal view can resist all four.

Lennon, P. (2024). Are Phenomenal Theories of Thought Chauvinistic? American Philosophical Quarterly 61(3), 199-213. [journal]

I have presented this work at:

The Association for the Scientific Study of Consciousness, NYU, 2023

Method, Theory, and Reality Workshop, UMass Amherst, 2023

Smithies Student Workshop, OSU, 2022


Recent debates about consciousness and welfare have focused on whether consciousness is required for welfare subjectivity. There have been fewer attempts to explain the significance that particular kinds of consciousness have for welfare value. In this paper, I explore the relevance of cognitive experience for theories of welfare. I introduce the cognitive zombie intuition, the idea that an absence of cognitive experience can drastically change one’s welfare. I then attempt to explain the cognitive zombie intuition. I first consider and reject the idea that cognitive experience is itself a welfare good. I then argue that cognitive experience plays an object-expanding role: it drastically expands the range of objects welfare subjects can desire or be pleased by. This expanded range includes paradigmatic welfare goods such as intellectual achievement, friendship, humor, aesthetic experiences, and existential experiences. I close by showing how cognitive experience’s object expanding role is compatible with leading theories of welfare.

Lennon, P. (forthcoming). The Value of Cognitive Experience. Australasian Journal of Philosophy. [preprint]

I have presented this work at:

The Ethics of Consciousness Summer School, Rice University Paris Center, Paris, France, 2023


I argue that there are a number of ethical issues facing college and professional athletes that admit of a unified treatment: viewing athletes as workers. By worker, I mean an agent who sells their labor for compensation. With this notion of worker in place, I present and discuss arguments for four claims: not paying college athletes is morally wrong; that the N.C.A.A. infringes on the right of college athletes to collectively bargain; that it is prima facie wrong to draft and trade professional athletes; and that fans fail to respect athletes’ right to strike when they complain about labor stoppages in professional leagues. I argue that sports fans and members of sports media should explicitly conceive of athletes as workers to recognize and prevent these wrongs. I conclude by suggesting that all with an interest in the welfare of labor have an interest in conceiving of athletes as workers, as it puts what is owed to all workers into stark relief. 

Lennon, P. (2024) Athletes as workers. Journal of the Philosophy of Sport 51(3): 476-495. [preprint] [journal]

I have presented this work at:

The First Annual Philosophy and Activism Conference, University of Missouri-St. Louis, 2022

The 2023 Meeting of the American Philosophical Association, Eastern Division, Montreal


Works in Progress

A paper on language models and beliefs (with André Curtis-Trudel)

A paper on consciousness and representational format (with Jake Quilty-Dunn and Mason Westfall)

A paper on consciousness and AI ethics

A paper on relationship between the science of consciousness and the value of consciousness