Validation of the Psychological Insight Scale: A new scale to assess psychological insight following a psychedelic experience.

Autor:	Peill JM; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK., Trinci KE; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.; Clinical Psychopharmacology Unit, Division of Psychology and Language Sciences, University College London, London, UK., Kettner H; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK., Mertens LJ; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK., Roseman L; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK., Timmermann C; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK., Rosas FE; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.; Data Science Institute, Imperial College London, London, UK.; Centre for Complexity Science, Imperial College London, London, UK., Lyons T; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK., Carhart-Harris RL; Department of Brain Sciences, Centre for Psychedelic Research, Imperial College London, London, UK.; Psychedelics Division, Neuroscape, University of California San Francisco, San Francisco, CA, USA.
Jazyk:	angličtina
Zdroj:	Journal of psychopharmacology (Oxford, England) [J Psychopharmacol] 2022 Jan; Vol. 36 (1), pp. 31-45. Date of Electronic Publication: 2022 Jan 05.
DOI:	10.1177/02698811211066709
Abstrakt:	Introduction: As their name suggests, 'psychedelic' (mind-revealing) compounds are thought to catalyse processes of psychological insight; however, few satisfactory scales exist to sample this. This study sought to develop a new scale to measure psychological insight after a psychedelic experience: the Psychological Insight Scale (PIS). Methods: The PIS is a six- to seven-item questionnaire that enquires about psychological insight after a psychedelic experience (PIS-6) and accompanied behavioural changes (PIS item 7). In total, 886 participants took part in a study in which the PIS and other questionnaires were completed in a prospective fashion in relation to a planned psychedelic experience. For validation purposes, data from 279 participants were analysed from a non-specific 'global psychedelic survey' study. Results: Principal components analysis of PIS scores revealed a principal component explaining 73.57% of the variance, which displayed high internal consistency at multiple timepoints throughout the study (average Cronbach's α = 0.94). Criterion validity was confirmed using the global psychedelic survey study, and convergent validity was confirmed via the Therapeutic-Realizations Scale. Furthermore, PIS scores significantly mediated the relationship between emotional breakthrough and long-term well-being. Conclusion: The PIS is complementary to current subjective measures used in psychedelic studies, most of which are completed in relation to the acute experience. Insight - as measured by the PIS - was found to be a key mediator of long-term psychological outcomes following a psychedelic experience. Future research may investigate how insight varies throughout a psychedelic process, its underlying neurobiology and how it impacts behaviour and mental health.
Databáze:	MEDLINE
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