Ayahuasca, Personality and Acute Psychological Effects in Neo-Shamanic and Religious Settings in Uruguay.

People who use ayahuasca in a neo-shamanic group and a Santo Daime church in Uruguay differ in personality and acute psychological effects. Santo Daime members scored lower on Neuroticism-Anxiety, Dependence, Low Self-Esteem, Anger, and Restlessness, possibly due to the protective effects of a structured church religion or because some neo-shamanic participants were undergoing treatment. During rituals, the neo-shamanic group reported stronger somesthesia and perception, linked to their high-arousal setting. Chemical analysis found typical alkaloids with no adulterants; the neo-shamanic sample had a higher β-carbolines-to-DMT ratio, which may explain the stronger somesthetic effects. Personality and acute effects correlated only in the neo-shamanic group, suggesting a more individualistic tradition.

Study at a glance

Abstract

This study is an interdisciplinary research into Uruguayan ayahuasca users belonging to one neo-shamanic and one Santo Daime group. The study involved the chemical analysis of ayahuasca samples, an ethnographic description of the two traditions and rituals, and the application of psychometric scales to measure personality differences, and the acute psychological effects during an ayahuasca ritual. Personality measurements showed lower scores for Santo Daime in Neuroticism-Anxiety, Dependence, Low Self-Esteem, Anger and Restlessness. These differences may be related to the presence of participants under treatment in the neo-shamanic group and/or to the protective effects of a church religion such as Santo Daime. Regarding acute effects, the neo-shamanic group showed higher scores in Somesthesia and Perception, which can be related to the high-arousal ritual setting. Chemical analysis for the ayahuasca samples showed a typical composition of alkaloids. No adulterants were found. The sample from the neo-shamanic group displayed a higher β-carbolines:DMT ratio compared to the Santo Daime sample, which could be related to the higher effects observed for Somesthesia for the neo-shamanic group. Significant positive correlations between some personality traits and acute effects were found only in the neo-shamanic group, which may be related to the more individualistic approach of this tradition.