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LSD and creativity: Increased novelty and symbolic thinking, decreased utility and convergent thinking

In a randomized, double‑blind, placebo‑controlled crossover with 24 healthy volunteers, 50 μg LSD increased novelty, surprise, originality and semantic distance while reducing utility and convergent thinking, producing a shift the authors characterise as pattern break, disorganisation and enhanced symbolic thinking. This reallocation of cognitive resources “away from normal” and “towards the new” suggests LSD‑induced symbolic thinking could be leveraged to improve outcomes in psychedelic‑assisted therapy.

Authors

  • Fernanda Palhano-Fontes
  • Luiz Tófoli
  • Johannes Ramaekers

Published

Journal of Psychopharmacology
individual Study

Abstract

Background

Controversy surrounds psychedelics and their potential to boost creativity. To date, psychedelic studies lack a uniform conceptualization of creativity and methodologically rigorous designs.

Aims

This study aimed at addressing previous issues by examining the effects of lysergic acid diethylamide (LSD) on creativity using multimodal tasks and multidimensional approaches.

Methods

In a randomized, double-blind, placebo-controlled, crossover study, 24 healthy volunteers received 50 μg of LSD or inactive placebo. Near drug peak, a creativity task battery was applied, including pattern meaning task (PMT), alternate uses task (AUT), picture concept task (PCT), creative metaphors task (MET) and figural creativity task (FIG). Creativity was assessed by scoring creativity criteria (novelty, utility, surprise), calculating divergent thinking (fluency, originality, flexibility, elaboration) and convergent thinking, computing semantic distances (semantic spread, semantic steps) and searching for data-driven special features.

Results

LSD, compared to placebo, changed several creativity measurements pointing to three overall LSD-induced phenomena: (1) ‘pattern break’, reflected by increased novelty, surprise, originality and semantic distances; (2) decreased ‘organization’, reflected by decreased utility, convergent thinking and, marginally, elaboration; and (3) ‘meaning’, reflected by increased symbolic thinking and ambiguity in the data-driven results.

Conclusion

LSD changed creativity across modalities and measurement approaches. Three phenomena of pattern break, disorganization and meaning seemed to fundamentally influence creative cognition and behaviour pointing to a shift of cognitive resources ‘away from normal’ and ‘towards the new’. LSD-induced symbolic thinking might provide a tool to support treatment efficiency in psychedelic-assisted therapy.

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Research Summary of 'LSD and creativity: Increased novelty and symbolic thinking, decreased utility and convergent thinking'

Introduction

Creativity is important across society and there has been renewed interest in whether serotonergic psychedelics enhance creative cognition. Previous work has been limited by small samples, varied operational definitions of creativity, naturalistic settings, lack of placebo controls and inconsistent dosing, producing mixed findings for measures such as fluency, originality and convergent thinking. Semantically oriented studies have reported increased semantic priming and larger semantic distances under psychedelics, while behavioural reports describe altered artistic output and more vivid, sometimes bizarre, imagery. Wießner and colleagues set out to address these limitations by testing the effects of a relatively low dose of LSD (50 μg) in a randomised, double-blind, placebo-controlled, crossover design. They applied a multimodal creativity battery covering visual and verbal production, scored responses using theory-driven criteria (novelty, utility, surprise), established divergent and convergent thinking metrics, semantic-distance indices and a data-driven content analysis to capture features such as symbolic thinking and ambiguity. The study aimed to map how LSD alters multiple dimensions of creative cognition and behaviour under controlled conditions.

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Study Details

References (26)

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