Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months

Abstract: Background: Although clinical trials of psychedelics have reported therapeutic benefits, the effects of illicit psychedelic use may be different because of drug quality and influences upon consumption circumstances. This study used a battery of psychological measures to examine the effects...

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Main Authors: Jonathan D. Williams, Philip N. Murphy
Format: Article
Language:English
Published: Hogrefe Publishing Group 2025-06-01
Series:European Journal of Psychology Open
Subjects:
Online Access:https://econtent.hogrefe.com/doi/10.1024/2673-8627/a000081
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author Jonathan D. Williams
Philip N. Murphy
author_facet Jonathan D. Williams
Philip N. Murphy
author_sort Jonathan D. Williams
collection DOAJ
description Abstract: Background: Although clinical trials of psychedelics have reported therapeutic benefits, the effects of illicit psychedelic use may be different because of drug quality and influences upon consumption circumstances. This study used a battery of psychological measures to examine the effects related to illicit psychedelic consumption. Method: Psychedelic use was an independent variable with two groups: recent users (i.e., within the previous 12 months: n = 33, mean age = 30.18 years [SD = 8.87 years], 18 males) and a group of nonusers and former users (i.e., longer ago than 12 months: n = 37, mean age = 32.47 years [SD = 12.35 years], 19 males). Participants responded online to a battery of psychometric tests. Results: Recent psychedelic users scored higher on mindfulness, openness, and arousal, self-reported fewer cognitive failures, and produced fewer errors on the WCST than former users and nonusers. Recent use of nonpsychedelic drugs emerged as a potential confound. Conclusions: The results concerning mindfulness, openness, anxiety, and depression among these users of illicit psychedelic supplies are arguably consistent with findings from clinical trials. Further research using psychometric measures and laboratory tests with illicit psychedelic drugs is indicated.
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spelling doaj-art-86fe1f76e4204a129eb4dd8899887fbb2025-08-20T03:22:22ZengHogrefe Publishing GroupEuropean Journal of Psychology Open2673-86272025-06-018429710610.1024/2673-8627/a000081Psychological Effects Related to Psychedelic Substance Use in the Previous 12 MonthsJonathan D. Williams0Philip N. Murphy1Department of Psychology, Edge Hill University, Ormskirk, UKDepartment of Psychology, Edge Hill University, Ormskirk, UKAbstract: Background: Although clinical trials of psychedelics have reported therapeutic benefits, the effects of illicit psychedelic use may be different because of drug quality and influences upon consumption circumstances. This study used a battery of psychological measures to examine the effects related to illicit psychedelic consumption. Method: Psychedelic use was an independent variable with two groups: recent users (i.e., within the previous 12 months: n = 33, mean age = 30.18 years [SD = 8.87 years], 18 males) and a group of nonusers and former users (i.e., longer ago than 12 months: n = 37, mean age = 32.47 years [SD = 12.35 years], 19 males). Participants responded online to a battery of psychometric tests. Results: Recent psychedelic users scored higher on mindfulness, openness, and arousal, self-reported fewer cognitive failures, and produced fewer errors on the WCST than former users and nonusers. Recent use of nonpsychedelic drugs emerged as a potential confound. Conclusions: The results concerning mindfulness, openness, anxiety, and depression among these users of illicit psychedelic supplies are arguably consistent with findings from clinical trials. Further research using psychometric measures and laboratory tests with illicit psychedelic drugs is indicated.https://econtent.hogrefe.com/doi/10.1024/2673-8627/a000081psychedelicsmindfulnessdepressionanxietypersonalitycognition
spellingShingle Jonathan D. Williams
Philip N. Murphy
Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months
European Journal of Psychology Open
psychedelics
mindfulness
depression
anxiety
personality
cognition
title Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months
title_full Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months
title_fullStr Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months
title_full_unstemmed Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months
title_short Psychological Effects Related to Psychedelic Substance Use in the Previous 12 Months
title_sort psychological effects related to psychedelic substance use in the previous 12 months
topic psychedelics
mindfulness
depression
anxiety
personality
cognition
url https://econtent.hogrefe.com/doi/10.1024/2673-8627/a000081
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