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C. J. A. Morgan

4 papers in the library · 4 citations · publishing 2009-2026

Papers

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Learning from boundlessness: epistemic shifts towards a holistic worldview following psychedelic experiences

npj Mental Health Research January 29, 2026 Eirini K. Argyri, Flora Fraser, Stefan Schilling et al.

Psychedelic substances are increasingly recognized for their potential to catalyse transformative shifts in worldviews. Central to these transformations may be the integration of self-transcendent states. This mixed-methods study explored transformative psychedelic experiences, focussing on subsequent epistemic shifts. Ninety participants completed the Awe Experience Scale (AWE-S), and the...

Sub-chronic impact of cannabinoids in street cannabis on cognition, psychotic-like symptoms and psychological well-being

Psychological Medicine February 1, 2012 C. J. A. Morgan, C. Gardener, G. Schafer et al.

Background Cannabis varies considerably in levels of its two major constituent cannabinoids – (delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD). Recently, we found evidence that those who smoked cannabis containing detectable levels of CBD had fewer psychotic-like symptoms than those whose cannabis had no CBD. The present study aimed, first, to replicate those findings and, second, to...

Acute cannabis use causes increased psychotomimetic experiences in individuals prone to psychosis

Psychological Medicine June 1, 2009 O. Mason, C. J. A. Morgan, S. K. Dhiman et al.

BackgroundEpidemiological evidence suggests a link between cannabis use and psychosis. A variety of factors have been proposed to mediate an individual's vulnerability to the harmful effects of the drug, one of which is their psychosis proneness. We hypothesized that highly psychosis-prone individuals would report more marked psychotic experiences under the acute influence of cannabis.MethodA...