• The University of Western Australia (M204), 35 Stirling Highway,

    6009 Perth


  • 15 Citations
  • 2 h-Index
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Personal profile


Dr Chris Letheby is a philosopher of mind and cognitive science, working on issues arising from the use of psychedelic drugs in psychiatry and neuroscience. His doctoral research, conducted at the University of Adelaide, presented the first systematic analysis of psychedelic experience within the framework of 21st century philosophy of cognitive science. He is currently (2018-2021) Lecturer in Philosophy at the University of Western Australia and (2019-2022) Postdoctoral Researcher at the University of Adelaide on the ARC-funded project 'Philosophical Perspectives on Psychedelic Psychiatry'. His monograph 'Philosophy of Psychedelics: Naturalism and Psychiatric Mysticism' is under contract with Oxford University Press.


Chris Letheby's research interests include: the epistemic status of psychedelic experience and altered states of consciousness; naturalistic accounts of spirituality and mysticism; the nature of self-representation and the possibility of selfless consciousness; predictive processing theories of cognition and self-awareness; the role of self-representation in psychiatric disorder and its treatment; the implications of psychedelic therapy for philosophy of psychiatry; conceptual and methodological issues in psychedelic science; the relationship of psychology and neuroscience; the nature of explanation in the mind and brain sciences; and the connections between psychedelics and meditation.

Teaching overview

PHIL2006 Philosophy of Psychology and Psychiatry
PHIL2007 Knowledge and the Justification of Belief

PHIL2005 Exploring the Nature of Science
PHIL2006 Philosophy of Psychology and Psychiatry

PHIL2005 Exploring the Nature of Science
PHIL1003 God, Mind and Knowledge (lectures only)

Education/Academic qualification

Philosophy, PhD, University of Adelaide

External positions

Postdoctoral Researcher, University of Adelaide

15 Apr 201914 Apr 2022


  • Philosophy of Science
  • Philosophy of psychiatry

Fingerprint Dive into the research topics where Chris Letheby is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

Hallucinogens Medicine & Life Sciences
Cognition Medicine & Life Sciences
Ego Medicine & Life Sciences
Psychology Medicine & Life Sciences
Therapeutic Human Experimentation Medicine & Life Sciences
Drugs Arts & Humanities
Metaphysical Arts & Humanities
Delusions Medicine & Life Sciences

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2012 2020

  • 15 Citations
  • 2 h-Index
  • 5 Article
  • 1 Chapter
  • 1 Review article

Being for no-one: psychedelic experience and minimal subjectivity

Letheby, C., 20 Jan 2020, (Accepted/In press) In : Philosophy and the Mind Sciences.

Research output: Contribution to journalArticle

Open Access

The varieties of psychedelic epistemology

Letheby, C., 2019, Psychedelicacies: more food for thought from Breaking Convention. Wyrd, N., Luke, D., Tollan, A., Adams, C. & King, D. (eds.). Strange Attractor Press

Research output: Chapter in Book/Conference paperChapter

Open Access

Naturalizing psychedelic spirituality

Letheby, C., 1 Sep 2017, In : Zygon. 52, 3, p. 623-642 20 p.

Research output: Contribution to journalArticle

existential anxiety

Self unbound: ego dissolution in psychedelic experience

Letheby, C. & Gerrans, P., 1 Jan 2017, In : Neuroscience of Consciousness. 2017, 1

Research output: Contribution to journalArticle

Open Access
Drug Users
8 Citations (Scopus)

The epistemic innocence of psychedelic states

Letheby, C., 1 Jan 2016, In : Consciousness and Cognition. 39, p. 28-37 10 p.

Research output: Contribution to journalReview article

Pharmaceutical Preparations