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Hamilton Morrin

@hamiltonmorrin.bsky.social
585 followers 1.4K following 67 posts

@KingsIoPPN Doctoral Fellow | Video games, BCIs, VR & Neuropsych | Genetics BSc | @MaudsleyNHS ST Doctor | @GamingTheMind Trustee | Ex @RCPsych Psych Star

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Hamilton Morrin @hamiltonmorrin.bsky.social · 21/03/2026
Working on it!
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Hannah Harris Green @whatsitlike.me · 16/03/2026
In one of the first scientific reviews on the emerging concept of “AI psychosis,” researchers expressed real concern about the possibility that chatbots can exacerbate delusions, while maintaining reservations about the idea it can “cause” psychosis in people who aren’t already predisposed.
theguardian.com
New study raises concerns about AI chatbots fueling delusional thinking
First major study on ‘AI psychosis’ suggests chatbots can encourage delusions among vulnerable people
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Hamilton Morrin @hamiltonmorrin.bsky.social · 14/03/2026
Pleased to see our @thelancet.com Lancet Psychiatry article on 'AI psychosis' covered in The Guardian this weekend @aldersonday.bsky.social @ricardotwumasi.bsky.social
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The Guardian @theguardian.com · 14/03/2026
New study raises concerns about AI chatbots fueling delusional thinking
theguardian.com
New study raises concerns about AI chatbots fueling delusional thinking
First major study on ‘AI psychosis’ suggests chatbots can encourage delusions among vulnerable people A new scientific review raises concerns about how chatbots powered by artificial intelligence may encourage delusional thinking, especially in vulnerable people. A summary of existing evidence on artificial intelligence-induced psychosis was published last week in the Lancet Psychiatry, highlighting how chatbots can encourage delusional thinking – though possibly only in people who are already vulnerable to psychotic symptoms. The authors advocate for clinical testing of AI chatbots in conjunction with trained mental health professionals. Continue reading...
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
I’m delighted to share our paper in The Lancet Psychiatry ‘AI-associated delusions and large language models: risks, mechanisms of delusion co-creation, and safeguarding strategies’ www.sciencedirect.com/science/arti...
sciencedirect.com
Artificial intelligence-associated delusions and large language models: risks, mechanisms of delusion co-creation, and safeguarding strategies
Large language models (LLMs) are poised to become a ubiquitous feature of everyday life, mediating communication, decision making, and information cur…
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Hamilton Morrin @hamiltonmorrin.bsky.social · 08/03/2026
Sí, fue un placer absoluto colaborar!
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
Link to paper: www.sciencedirect.com/science/arti...
sciencedirect.com
Artificial intelligence-associated delusions and large language models: risks, mechanisms of delusion co-creation, and safeguarding strategies
Large language models (LLMs) are poised to become a ubiquitous feature of everyday life, mediating communication, decision making, and information cur…
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
This research is complex, resource-intensive, and currently underfunded. If you are a funder or organisation with a stake in how AI shapes human health and wellbeing, we would very much welcome a conversation.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
We are also working on a rigorous causality assessment framework for cases, support for the AI safety community's efforts to benchmark mental health risk, and perhaps most ambitiously, a surveillance study to connect real-world harms to features of the AI interaction itself.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
For us this paper was just the beginning. With international collaborators from across multiple fields, along with people with lived experience, we are now working on an ambitious programme that includes comprehensive clinical and phenomenological characterisation of these cases.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
Thanks go to my incredible co-lead Tom Pollak and wonderful collaborators Luke Nicholls, @drmichaellevin.bsky.social, Jenny Yiend, Udita Iyengar, Francesca DelGuidice, Sagnik Bhattacharya, @stefaniatognin.bsky.social, @jamesmaccabe.bsky.social, @ricardotwumasi.bsky.social, @aldersonday.bsky.social
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
As these models become more ubiquitous, we hope our paper and the proposals made herein will serve as a call to action for researchers, developers, and policymakers. Encouragingly at @iaseai.bsky.social last week we did meet teams conducting important work on AI safety in mental health contexts.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
We know companies have since made efforts to introduce additional guardrails and safety features, but it is hard not to feel concerned by yet emerging lawsuits and accounts of individuals having delusional beliefs affirmed, and/or suicidal ideation encouraged during interactions.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
Though the messaging is broadly the same as from our July 2025 preprint, we do also comment on more recent developments including OpenAI’s figures from October last year suggesting that 0.07% of users (or 560,000 individuals) show signs of psychosis or mania each week.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 07/03/2026
I’m delighted to share our paper in The Lancet Psychiatry ‘AI-associated delusions and large language models: risks, mechanisms of delusion co-creation, and safeguarding strategies’ www.sciencedirect.com/science/arti...
sciencedirect.com
Artificial intelligence-associated delusions and large language models: risks, mechanisms of delusion co-creation, and safeguarding strategies
Large language models (LLMs) are poised to become a ubiquitous feature of everyday life, mediating communication, decision making, and information cur…
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Dr Ricardo Twumasi @ricardotwumasi.bsky.social · 07/03/2026
Store sprogmodeller er ved at blive en del af hverdagen. Men hvad sker der, når de validerer vrangforestillinger? Ny artikel i The Lancet Psychiatry med @aldersonday.bsky.social @hamiltonmorrin.bsky.social doi.org/10.1016/S221... #AIogPsykose #Psykiatri #Chat
doi.org
Redirecting
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Ben Alderson-Day @aldersonday.bsky.social · 06/03/2026
Last year I had the pleasure of joining a new working group on AI & psychosis led by @hamiltonmorrin.bsky.social & Tom Pollak. Today our report went into @thelancetpsych.bsky.social with updated recommendations for digital safety. www.sciencedirect.com/science/arti...
sciencedirect.com
Artificial intelligence-associated delusions and large language models: risks, mechanisms of delusion co-creation, and safeguarding strategies
Large language models (LLMs) are poised to become a ubiquitous feature of everyday life, mediating communication, decision making, and information cur…
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Gaming the Mind @gamingthemind.bsky.social · 24/01/2026
We are at the National Student Psychiatry Conference at University of Kent, showing off extracurricular volunteer activities that psych trainees can engage in through the charity, to support mental health in the gaming community! @rcpsych.bsky.social @kmmsmedschool.bsky.social
Stall at the conference
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
Preprint: osf.io/preprints/ps... Tom's more thoughtful summary: drtompollak.substack.com/p/playing-wi... #AI #MentalHealth #Psychiatry #AIsafety #HCI #DigitalHealth #Governance
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
New Year, New(ish) Preprint! I'm delighted to share "Playing with the dials of belief: how controllable AI behaviours could modulate human belief and cognition across scales" (with Quinton Deeley and Tom Pollak). osf.io/preprints/ps...
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
Preprint: osf.io/preprints/ps... Tom's more thoughtful summary: drtompollak.substack.com/p/playing-wi... #AI #MentalHealth #Psychiatry #AIsafety #HCI #DigitalHealth #Governance
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
If these are dials, the real issue is who gets to set them, who knows they are being adjusted, and what it means to build a technology that can press on the most human parts of us while insisting it is merely a tool.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
That implies impact assessment, transparency about significant changes to how systems behave and genuine access for independent researchers, clinicians, and people with lived experience to study these systems under agreed safeguards.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
The paper ends with governance questions. We argue that changes to defaults should be treated as interventions on belief and attention.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
We also raise questions about how this could interact with real-world factors like sleep, stress, dopaminergic tone, and post-psychedelic belief plasticity.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
In our new preprint, we unpack some of the interaction settings or "dials" of LLMs, and drawing inspiration from established computational psychiatry literature postulate how through a sort of "virtual psychopharmacology" these dials may be altering user belief dynamics.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
The potential for AI models to influence belief in social and political contexts has been widely recognised, to the extent that a recent RAND report outlined the "security implications of AI-induced psychosis". www.rand.org/pubs/researc...
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Hamilton Morrin @hamiltonmorrin.bsky.social · 05/01/2026
New Year, New(ish) Preprint! I'm delighted to share "Playing with the dials of belief: how controllable AI behaviours could modulate human belief and cognition across scales" (with Quinton Deeley and Tom Pollak). osf.io/preprints/ps...
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Hamilton Morrin @hamiltonmorrin.bsky.social · 28/10/2025
0.07% of ChatGPT users showing signs of psychosis or mania may sound low, but that amounts to ~560,000 people each week openai.com/index/streng...
openai.com
Strengthening ChatGPT’s responses in sensitive conversations
We worked with more than 170 mental health experts to help ChatGPT more reliably recognize signs of distress, respond with care, and guide people toward real-world support–reducing responses that fall...
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Gaming the Mind @gamingthemind.bsky.social · 24/10/2025
Are you at #MCMComicCon and want to relax? Come to our Reset Room, a calm oasis where you can chill, do lo-fi activities, & re-energise before heading back to the show! We have mental health information too! Staffed by this cool crew. Find us upstairs in the Platinum Suite! 🧠🎮
GTM volunteer crewDim lighting and soothing atmosphere in the Reset Room
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Gaming the Mind @gamingthemind.bsky.social · 25/10/2025
We're still at #MCMComicCon with our Reset Room! If you need to take a break for any reason, come by. It's quieter in here! We also have mental health information and lo-fi activities. It's run by today's awesome crew right here! 🧠🎮 Find us upstairs in the Platinum Suite!
GTM volunteers outside Reset RoomDim lighting in the Reset Room
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Prof Paul Fletcher delivers the day's keynote. As a clinical neuroscientist sees the potential of games to measure stress responses from players, and to use biofeedback for training self-regulation - explored through The Insight Project with Ninja Theory
Prof Paul Fletcher on stageProf Paul Fletcher on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Dr Victoria McCloud chairs a panel featuring @chellaramanan.bsky.social from @3foldgames.bsky.social, Dom Matthews from Ninja Theory, and Dr Andrew Howe
Dr Victoria McCloud and panelists
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Ninja Theory Studio Head Dom Matthews discusses the development of Hellblade: Senua's Sacrifice. The studio worked with people with lived experience of psychosis, aiming to create a truthful representation of the symptoms in lead character Senua.
Dom Matthews on stageDom Matthews on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference @chellaramanan.bsky.social speaks about @3foldgames.bsky.social's Before I Forget, and depicting dementia in a non-cliched, respectful way. She and the team worked with psychiatrists for input, including our own Dr Donald Servant.
Chella Ramanan on stageChella Ramanan on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Dr Andrew Howe, Consultant Psychiatrist & Psychodynamic Psychotherapist, speaks on Jungian archetypes in The Legend of Zelda, and using the mythology of games in psychological therapy. He guides us through active imagination based on Ocarina of Time 💭
Dr Andrew Howe on stageDr Andrew Howe on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Malachi Gow showed us his game "i love me, i love me not", a relaxing game focusing on teaching mental health habits. He is the recipient of our first Independent Developer Award, and £1,000 for further development. 🏆 malgow.net
Malachi Gow receives the award
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference at @rcpsych.bsky.social Addictions Psychiatrist Dr Stephen Kaar on research looking at longitudinal research into gaming disorder. Evidence suggests young people with depressive, anxiety, ADHD symptoms are at higher risk of developing gaming disorder symptoms.
Dr Stephen Kaar on stageDr Stephen Kaar on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference at @rcpsych.bsky.social @leonxiao.com on loot boxes and regulations related to odds disclosure, minimum age requirements, and advertising, as well as countries where they are recognised as gambling, and the myriad cases where games don't comply with regulations!
Leon Xiao on stageLeon Xiao on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference at the @rcpsych.bsky.social Prof Henrietta Bowden-Jones on the establishment of the gaming disorder diagnosis and the range of presentations seen at the The National Centre for Gaming Disorders.
Prof Henrietta Bowden-Jones on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Dr Stone Hsieh on the neurological benefits of exercise. He and Bread Lab's ActiGamer project looks to see if active video games can reduce ADHD symptoms, and the feasibility if introducing this as an intervention.
Dr Stone Hsieh at the podiumDr Stone Hsieh at the podium
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Gaming the Mind Conference Elin Festøy delivers a talk about My Child New Beginnings, about raising a Lebensborn child dealing with trauma in a hateful environment. The game aims to build empathy with the child, to create a strong motivator for transformation.
Elin Festøy at the podiumElin Festøy on stage
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Gaming the Mind @gamingthemind.bsky.social · 29/09/2025
Preparing for the launch of the first ever Gaming the Mind conference! Hosted at the @rcpsych.bsky.social Ready for a day talking about the exciting growing field of gaming and mental health!
Auditorium at the Royal College of Psychiatrists
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Chella Ramanan 🇬🇩 @chellaramanan.bsky.social · 29/09/2025
Today I'll mostly be talking about videogames at the Royal College of Psychiatrists @gamingthemind.bsky.social conference #BeforeIForget @3foldgames.bsky.social
A light-skinned Black woman (Chella) with a curly fringe and glasses and a black puff-sleeve top on is smiling.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 24/09/2025
#HyperemesisGravidarum #PerinatalMentalHealth #WomensHealth #ObGyn #Psychiatry #PerinatalPsychiatry
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Hamilton Morrin @hamiltonmorrin.bsky.social · 24/09/2025
Many thanks to my brilliant co-authors for making this possible: Yasmeen Abdel Bari, Katharine Lynch-Kelly, Danish Hafeez, @liviaasan.bsky.social, Mark J Edwards, Gertrude Seneviratne, Thomas A Pollak
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Hamilton Morrin @hamiltonmorrin.bsky.social · 24/09/2025
We suggest that this finding highlights the importance of integrated physical and mental healthcare for all those suffering with HG, regardless of physiological severity.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 24/09/2025
Interestingly, cases of hyperemesis gravidarum with metabolic disturbance displayed a significantly lower risk of depression and postpartum depression compared with those without metabolic disturbance.
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Hamilton Morrin @hamiltonmorrin.bsky.social · 24/09/2025
We also saw significantly increased risk in rare but serious outcomes such as: - Wernicke's encephalopathy 2.39 (1.25 - 4.56) - Puerperal psychosis 1.80 (1.48 - 2.20)
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Hamilton Morrin @hamiltonmorrin.bsky.social · 24/09/2025
In the first year following diagnosis we found ⬆️ cumulative incidence risk ratios in a number of outcomes including: - Any mental, behavioural, or neurodevelopmental disorder 1.96 (1.93 - 1.99) - Postpartum depression 2.70 (2.61 - 2.79) - Eating disorders 2.06 (1.85 - 2.89) - PTSD 1.77 (1.69 - 1.86)
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