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Aki Nikolaidis

Center for the Developing Brain, Child Mind Institute, New York, NY, USA.

2 papers in the library · 11 citations · publishing 2023-2025

Papers

Exploring Self-Reported Effects of Naturalistic Psychedelic Use Among Gender and Sexual Minorities: A Quantitative Survey Study.

Journal of psychoactive drugs June 18, 2025 Rafaelle Lancelotta, Meghan DellaCrosse, Diana Quinn et al. 7 citations

Among 346 LGBTQIA+ individuals, mostly White and in their early 30s, those who used psychedelics reported improvements in mental health and shifts in gender and sexual identity. Retrospective reports showed large reductions in traumatic stress, depression, and anxiety, along with increased psychological flexibility. A significant link emerged between the intensity of the psychedelic experience and greater self-acceptance and sexual identity exploration. Most participants (77%) saw therapeutic potential in psychedelics for gender dysphoria, and 65% reported changes in gender identity attitudes after use. The findings suggest psychedelics may support identity exploration and mental health in this population, warranting further research.

Translation and Initial Psychometric Evaluation of Spanish Versions of Three Psychedelic Acute Effects Measures: Mystical, Challenging, and Insight Experiences

Journal of Psychoactive Drugs July 14, 2023 Christopher Timmermann, Aki Nikolaidis, Alan K. Davis et al. 4 citations

Spanish translations of three questionnaires measuring acute psychedelic effects—the Psychological Insight Questionnaire (PIQ), Challenging Experiences Questionnaire (CEQ), and Mystical Experiences Questionnaire (MEQ)—showed good psychometric properties in a sample of 442 native Spanish speakers. Confirmatory factor analysis confirmed that the factor structures matched the original English versions, and this consistency held across subgroups who had used LSD or psilocybin. Construct validity was supported by positive associations between the PIQ and MEQ and between these measures and changes in cognitive fusion, alongside negative associations with changes in prosocial behaviors. Predictive validity was indicated by strong relationships between persisting effects and scores on the MEQ and PIQ. The Spanish versions can be reliably used in research with Spanish-speaking populations.