Rotem Petranker

Rotem Petranker
York University · Department of Psychology

About

28
Publications
20,072
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240
Citations

Publications

Publications (28)
Article
A psychedelic industrial complex is emerging as new research on these substances and their effects is being approved. These substances show promise, but much remains unknown about their potential for both benefit and harm. Despite the paucity of reliable mechanistic evidence, some entrepreneurs have already begun to market psychedelic advice. We dr...
Preprint
A psychedelic industrial complex is emerging as new research on these substances and their effects are being approved. These substances show promise, but much remains unknown about their potential for both benefit and harm. Despite the paucity of reliable mechanistic evidence, some entrepreneurs have already begun to market psychedelic advice. We d...
Article
NOTE: This paper is open-access. You can access the full-text at the journal's website for free. The use of psychedelic substances in both humanistic and mainstream clinical research has been increasing in the last decade. In particular, the practice of microdosing—ingesting sub-hallucinogenic doses of psychedelics—has been increasing in populari...
Article
Background Sustaining attention for extended periods of time is associated with negative affect and this increase in negative affect is related to poorer task performance. Trait mindfulness has been shown to be associated with better sustained attention performance. This may be because trait mindfulness is associated with better attention ability o...
Article
Full-text available
Background: Microdosing psychedelics is the practice of taking small, sub-hallucinogenic doses of lysergic acid diethylamide or psilocybin containing mushrooms. Despite its surging popularity, little is known about the specific intentions to start microdosing and the effects of this practice. Aims: First, we aimed to replicate previous findings re...
Article
Science requires replicable tools to measure its intended constructs. Attention research has developed tools that have been used in mind-wandering research, but mind-wandering measures often rely on response-inhibition, which introduces speed-accuracy trade-offs that may conflate errors for mind-wandering. We sought to replicate three studies that...
Article
Full-text available
Psychedelics have a checkered past, alternately venerated as sacred medicines and vilified as narcotics with no medicinal or research value. After decades of international prohibition, a growing dissatisfaction with conventional mental health care and the pioneering work of the Multidisciplinary Association for Psychedelic Science (MAPS) and others...
Preprint
Full-text available
Background: The use of psychedelic substances like LSD and magic mushrooms in research and to treat mental health conditions has been increasing in the last decade. In particular, the practice of microdosing – using sub-hallucinogenic amounts of psychedelics – has been increasing (Anderson et al., 2019), but large-scale systemic qualitative analyse...
Preprint
Full-text available
Psychedelics have a checkered past, alternately venerated as sacred medicines and vilified as narcotics with no medicinal or research value. After decades of international prohibition, a growing dissatisfaction with conventional mental health care and the pioneering work of the Multidisciplinary Association for Psychedelic Science (MAPS) and others...
Preprint
Full-text available
Background: Microdosing psychedelics – the practice of taking small, sub-hallucinogenic doses of substances like LSD or psilocybin-containing mushrooms – is becoming increasingly popular. Despite its surging popularity, little is known about the effects of this practice. Aims: This research had three main aims. First, we attempted to replicate prev...
Article
Rationale Microdosing psychedelics – the practice of consuming small, sub-hallucinogenic doses of substances such as LSD or psilocybin – is gaining attention in popular media but remains poorly characterized. Contemporary studies of psychedelic microdosing have yet to report the basic psychiatric descriptors of psychedelic microdosers. Objectives...
Article
The social context-seeing people emotionally interacting-is one of the most common contexts in which emotion perception occurs. Despite its importance, emotion perception of social interactions from a 3rd-person perspective is poorly understood. Here we investigated whether emotion recognition of fear and anger is facilitated by mere congruency (th...
Presentation
Full-text available
Data from two surveys
Article
Full-text available
Background: Microdosing psychedelics is the practice of consuming very low, sub-hallucinogenic doses of a psychedelic substance, such as lysergic acid diethylamide (LSD) or psilocybin-containing mushrooms. According to media reports, microdosing has grown in popularity, yet the scientific literature contains minimal research on this practice. There...
Presentation
Full-text available
We sought to replicate existing findings in the mindfulness literature, specifically those that pertain to boredom and sustained attention. Furthermore, this project took a first step in teasing out the relevant aspect of mindfulness to sustained attention.
Presentation
Full-text available
A replication of the existing research on mindfulness and sustained attention, and an extension of the literature into a mechanistic model of the relationship between the two. Results suggest that the key construct linking trait mindfulness and sustained attention is the negative affect experienced during sustained attention tasks.
Article
The term valence can refer to either the affective response (e.g., "I feel bad") or the semantic knowledge about a stimulus (e.g., "car accidents are bad"). Accordingly, the content of self-reports can be more "experience-near" and proxy to the mental state of affective feelings, or, alternatively, involve nonexperiential semantic knowledge. In thi...
Article
Full-text available
Rationale Microdosing psychedelics—the regular consumption of small amounts of psychedelic substances such as LSD or psilocybin—is a growing trend in popular culture. Recent studies on full-dose psychedelic psychotherapy reveal promising benefits for mental well-being, especially for depression and end-of-life anxiety. While full-dose therapies inc...
Preprint
Full-text available
Microdosing psychedelics - the regular consumption of small amounts of psychedelic substances such as LSD or psilocybin - is a growing trend in popular culture. Recent studies on full-dose psychedelic psychotherapy reveal promising benefits for mental well-being, especially for depression and end-of-life anxiety. While full-dose therapies include p...
Poster
Full-text available
Meta-awareness (MA) is the process of attending to and appraising the contents of consciousness. MA is critical for certain higher-order attentional resources, but a research gap exists in how to practically detect MA in time-sensitive contexts. Validation of continuous MA measurements would allow us to better understand its temporal dynamics. We w...
Presentation
Full-text available
This presentation shows the results for our preregistered hypotheses concerning the relationship between microdosing and: Open Mindedness, Negative Emotionality, Wisdom, Dysfunctional Attitudes, and creativity (as measured by the Unusual Uses task)
Poster
Full-text available
There is some evidence that intensive mindfulness retreats are beneficial for performance on a sustained attention task (MacLean et al, 2010). At the same time, there is some evidence to suggest that casual practice of mindfulness is unrelated to sustained attention (MacCoon et al., 2014). Boredom and discomfort are negatively correlated with perfo...
Poster
Full-text available
Microdosing psychedelics has become a recent media phenomenon. Microdosing is the practice of taking sub-threshold doses of a substance, in this case, a psychedelic substance such as LSD or psilocybin. No scientific research has been published on the effects of microdosing psychedelics thus we ran a cross-sectional observational study on the microd...
Presentation
Full-text available
The Salon: Bringing Intellectual Conversation into the Living Room A Salon brings together diverse individuals to refine and amuse through conversation about a particular topic. The Salons of 17th and 18th century revolutionary France played an integral role in the country's cultural development, the dissemination of "Enlightenment" and intellectua...
Presentation
Full-text available
A Perliminary Study of Microdosing Psychedelics Microdosing psychedelics, such as lysergic acid diethylamide (LSD) and psilocybin, has become a recent media phenomenon, yet scientific studies verifying its effects are absent from the literature. To begin addressing these gaps in knowledge, we measured the microdosing drug practices and psychologic...
Article
The majority of emotion perception studies utilize instructed and stereotypical expressions of faces or bodies. While such stimuli are highly standardized and well-recognized, their resemblance to real-life expressions of emotion remains unknown. Here we examined facial and body expressions of fear and anger during real-life situations and compared...

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Projects

Projects (3)
Project
Ascertaining the aspects of mindfulness that are predictive of improved sustained attention performance.
Project
Microdosing is the process of consuming very small doses of a substance. While there is mounting anecdotal evidence reporting the utility of microdosing psychedelic substances there are no controlled scientific studies and thus no scientific understanding of the benefits and drawbacks of this practice. Our work aims to characterize potential benefits and drawbacks of microdosing in a community sample. We will examine and report demographics and common practices, personality variables, and creativity scores in order to further understand the microdosing population. We will also use a grounded theory approach to develop a taxonomy of reported benefits and drawbacks.
Project
Seli et al. have published a series of articles using the Metronome Response Task (MRT), but its use has not yet been independently replicated. Our team will re-create the MRT with minor adjustments to assess whether this tool shows replicable results and is useful for its intended purpose of behaviourally measuring mind-wandering through response-variability. In particular, our pre-registered replication will cover results from these three papers: Seli, P., Cheyne, J. A., & Smilek, D. (2013). Wandering minds and wavering rhythms: Linking mind wandering and behavioral variability. Journal of Experimental Psychology: Human Perception and Performance, 39(1), 1–5. https://doi.org/10.1037/a0030954 Seli, P., Cheyne, J. A., Xu, M., Purdon, C., & Smilek, D. (2015). Motivation, intentionality, and mind wandering: Implications for assessments of task-unrelated thought. Journal of Experimental Psychology: Learning, Memory, and Cognition, 41(5), 1417–1425. https://doi.org/http://dx.doi.org/10.1037/xlm0000116 Seli, P., Jonker, T. R., Cheyne, J. A., Cortes, K., & Smilek, D. (2015). Can research participants comment authoritatively on the validity of their self-reports of mind wandering and task engagement? Journal of Experimental Psychology. Human Perception and Performance, 41(3), 703–709. https://doi.org/10.1037/xhp0000029