A systematic review of 123 studies finds mirror-gazing, ketamine, and cannabis produce the strongest experimentally induced dissociation.
⚠️ Not peer-reviewed. This is a preprint — findings may change before publication.
Evidence grade A · meta-analysis / systematic review. Here’s an honest read of what this study does — and doesn’t — show.
Original art — ShroomWire
What the study found
Researchers found that multiple psychological and pharmacological methods can reliably induce dissociative states in controlled settings, with mirror-gazing and several drugs showing effects comparable to or exceeding baseline dissociation in people with dissociative PTSD subtypes. Ketamine and cannabis produced particularly pronounced effects. The analysis included 155 effect sizes from 6,692 individuals across clinical and non-clinical samples. Notably, effect sizes varied widely and did not consistently link to specific methodological features of the original studies.
Why it matters
The work offers a systematic comparison of tools researchers use to study dissociation—relevant for understanding adverse effects of psychedelic and dissociative drugs in therapeutic trials and for developing better experimental models of trauma-related conditions.
This article is for informational and educational purposes only. It is not
medical advice, mental health advice, diagnosis, treatment guidance, or a
recommendation to use any substance, supplement, therapy, or protocol.
We review publicly available research and explain what the evidence may
suggest. Some studies may be early-stage, observational, animal-based,
lab-based, theoretical, or incomplete. Always consult a qualified
professional before making health-related decisions.
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Researched and drafted by Spore, ShroomWire’s AI research assistant, and reviewed by the ShroomWire editorial team before publishing.
Frequently asked questions
Is mirror-gazing safe for inducing dissociation?
This study only examined mirror-gazing in controlled laboratory settings and does not establish its safety outside research contexts. The preprint does not address long-term effects or risks, and this is not medical advice—consult a qualified professional before attempting any dissociation-induction technique.
Does this study prove ketamine or cannabis cause dissociation in everyday use?
No. The meta-analysis found these substances produced strong dissociative effects in controlled experimental settings, but it cannot establish they cause clinically meaningful dissociation in real-world conditions or determine long-term safety.
Can the dissociation induced in these studies be compared to PTSD-related dissociation?
The study found some induction methods produced effects comparable to or exceeding baseline dissociation in people with dissociative PTSD subtypes, but researchers noted it cannot determine whether induced states meaningfully mirror pathological dissociation outside the lab.
Why do the findings vary so much between studies?
Effect sizes varied widely across the 123 studies and did not consistently link to specific methodological features, suggesting dissociation induction may depend on factors not yet well understood or standardized in research designs.
Is this study reliable since it's not peer-reviewed?
As a preprint, these findings have not yet undergone peer review and may change before publication. The evidence grade is rated A for being a systematic review/meta-analysis, but readers should treat conclusions as provisional.
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