Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Language Development01:22

Language Development

460
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
460
Improving Translational Accuracy02:07

Improving Translational Accuracy

11.9K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
11.9K
Reliability and Validity01:29

Reliability and Validity

13.2K
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
13.2K
Air-entraining Agents01:27

Air-entraining Agents

107
Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
107
Quality Assurance01:19

Quality Assurance

207
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
207
SBAR II: Application of SBAR01:14

SBAR II: Application of SBAR

4.8K
SBAR is an effective communication tool used by healthcare professionals to communicate patient information accurately. SBAR stands for Situation, Background, Assessment, and Recommendation. For a better understanding, an example is given below.
SBAR Report from a Nurse to a Health Care Provider
S: "Hello, Dr. Smith. This is Jane, RN, from the Med Surg unit. I am calling to tell you about Ms. White in Room 210, who is experiencing increased pain and redness at her incision site. Her recent...
4.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same authorSame journal

Beyond symptom reduction: DMT improves anxiety, life satisfaction, and quality of life in healthy volunteers and patients with depression.

Journal of psychopharmacology (Oxford, England)·2026
Same author

Use of Identity Theories in Smoking Cessation Research: A Scoping Review.

Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco·2026
Same author

The Brazilian Version of the Mystical Orientation Scale Revised (MOSR-BR): An Exploratory Study.

Journal of religion and health·2026
Same author

A new insight into ayahuasca's adverse effects: Reanalysis and perspectives on its mediating role in mental health from the Global Ayahuasca Survey (GAS).

PLOS mental health·2026
Same author

Pigeons, portals, and Pacman: Insightful problem solving and navigation using a touchscreen video game.

Journal of the experimental analysis of behavior·2026
Same author

What is it like to microdose LSD for depression? a thematic analysis of participant interviews from an open-label trial.

Therapeutic advances in psychopharmacology·2025

Related Experiment Video

Updated: Sep 17, 2025

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
09:09

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

Published on: September 27, 2024

540

OAV and 5D-ASC for Brazilian Portuguese: A validation and adaptation study.

Rafael S Rodrigues1, Isabel Wießner2,3, Dimitri Daldegan-Bueno2,4

  • 1Department of Psychology, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil.

Journal of Psychopharmacology (Oxford, England)
|June 28, 2025
PubMed
Summary
This summary is machine-generated.

Validated questionnaires for altered states of consciousness (ASC) in Brazil show reliable psychometric properties. Psychedelic experiences, particularly with ayahuasca, influence oceanic boundlessness and anxious ego-dissolution.

Keywords:
BrazilOAVPsychedelicsaltered states of consciousnesspsychometrics

More Related Videos

Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects
06:36

Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects

Published on: October 18, 2024

1.1K
Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
05:48

Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception

Published on: August 9, 2024

1.6K

Related Experiment Videos

Last Updated: Sep 17, 2025

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
09:09

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

Published on: September 27, 2024

540
Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects
06:36

Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects

Published on: October 18, 2024

1.1K
Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception
05:48

Author Spotlight: Investigating the Impact of Emotional Prosodies on Voice Recognition and Perception

Published on: August 9, 2024

1.6K

Area of Science:

  • Psychopharmacology
  • Neuroscience
  • Psychometrics

Background:

  • Altered states of consciousness (ASC) are crucial in psychedelic research.
  • Existing measurement tools require cultural adaptation for diverse populations.
  • The Altered States of Consciousness Rating Scale (OAV) and Five Dimensional-Altered States of Consciousness Questionnaire (5D-ASC) needed validation for Brazilian Portuguese.

Purpose of the Study:

  • To validate and culturally adapt the OAV and 5D-ASC for Brazilian Portuguese.
  • To establish reliable psychometric properties for measuring ASC in psychedelic research within Brazil.
  • To explore cultural influences on subjective psychedelic experiences.

Main Methods:

  • A parallel back-translation model and expert reviews ensured linguistic and cultural accuracy.
  • The scales were pre-tested and administered via an online survey to 3762 participants reporting psychedelic experiences.
  • Exploratory and confirmatory factor analyses, internal consistency, and convergent validity (with MEQ and EDI) were performed.

Main Results:

  • The OAV confirmed an 11-factor structure, and the 5D-ASC confirmed a 6-factor structure, both with high internal consistency (α > 0.76).
  • Significant correlations with the Mystical Experience Questionnaire (MEQ) and Ego Dissolution Inventory (EDI) demonstrated strong convergent validity.
  • Substance, setting, and meditation frequency influenced factor scores; ayahuasca and dimethyltryptamine experiences were linked to higher oceanic boundlessness and anxious ego-dissolution.

Conclusions:

  • The validated OAV and 5D-ASC scales possess reliable psychometric properties for the Brazilian context.
  • Cultural factors significantly shape subjective experiences with psychedelics.
  • Future research should utilize more diverse samples to confirm and expand these findings, acknowledging potential recall bias.