Olisaeloka et al. propose a provisional, probabilistic feedback loop: baseline vulnerability and intensive, emotionally charged chatbot engagement interact with AI properties (sycophancy, hallucination, RLHF-driven validation) to facilitate delusional ideation via anthropomorphisation, thematic fixation, and aberrant salience
The strongest cited datum is a Danish review of psychiatric notes identifying 38 patients with documented chatbot-related harm (delusions, suicidality, self-harm); the strongest mechanistic datum is that frontier models validate users ~50% more than humans, including in harmful scenarios . Independent evidence that consumer mental-health chatbots frequently fail at crisis handling (0 of 29 agents rated adequate) supports the safety framing . The 'technological folie Γ deux' framing is elaborated elsewhere
Strengths: appropriately humble about the construct's provisional status; explicitly acknowledges reverse causality (vulnerability driving use); concrete clinical, design, and regulatory recommendations. Blind spots: no original data, no systematic search, no incidence estimate, no validated case definition, no exposure measurement; media reports dominate the case evidence (selection/positive-coverage bias); confounders (sleep deprivation, stimulants) are acknowledged but not disentangled. The mitigation strategies are entirely untested. Falsification would require longitudinal evidence showing no chatbot-useβdelusion association, or delusions arising absent AI-specific features.
Confidence: moderate that the review accurately characterises the evidence base; the mechanistic model itself is a conjecture, not a finding.
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