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Outcome MeasureMystical Experience

PIQ

Psychological Insight Questionnaire

2 Papers in Blossom

Outcome Data Across Studies

Reported results for PIQ across 2 studies with quantitative data.

Papers Using PIQ

Open Accessindividual

Psilocybin with psychotherapeutic support for treatment-resistant depression: a pilot clinical trial

An open‑label pilot trial of two 25 mg psilocybin sessions with preparatory and integration psychotherapy for treatment‑resistant depression produced a clinically meaningful reduction in self‑rated depressive symptoms at three weeks (Hedges’ g = −1.27) that was maintained at 20 weeks, although individual responses varied (two sustained responders, three relapses, two non‑responders). Exploratory analyses linked pre‑dosing mindset, spiritual experiences and perceptual shifts to outcome trajectories, with adverse events consistent with prior studies and no serious adverse events.

Published
Journal
Therapeutic Advances in Psychopharmacology
Authors
Meikle, S., Carter, O., Liknaitzky, P., Johansen, L., Iyer, R., Strauss, N., Williams, M., Castle, D., Rossell, S. L., Ids, O.
Open Accessindividual

The therapeutic alliance between study participants and intervention facilitators is associated with acute effects and clinical outcomes in a psilocybin-assisted therapy trial for major depressive disorder

In a randomised, waiting‑list‑controlled psilocybin‑assisted therapy trial for major depressive disorder (N = 24), therapeutic alliance strengthened over time and higher alliance ratings before and shortly after dosing predicted stronger acute mystical and psychological‑insight experiences and significantly greater reductions in depressive symptoms up to 12 months. These results highlight the therapeutic relationship as an important predictor of both acute psychedelic experiences and long‑term clinical outcomes.

Published
Journal
PLOS ONE
Authors
Levin, A. W., Lancelotta, R., Sepeda, N. D., Gukasyan, N., Nayak, S., Wagener, T. L., Barrett, F. S., Griffiths, R. R., Davis, A. K.

Quick Facts

Full Name
Psychological Insight Questionnaire
Domain
Mystical Experience
Papers Indexed
2
Score Range
0–100
Interpretation
Higher = better
Unit
points
All Measures