I can't speak on this study in the OP, but I personally don't believe psychedelics are enough to convince someone that physicalism wrong. Look at Hamilton Morris from the Vice show Hamilton's Pharmacopeia. He's ingested all of the known (to my knowledge) psychedelics around & he's still a die-hard physicalist.Jim Cross wrote: ↑Mon Jun 28, 2021 12:18 pmOnline survey? Nope. Self-selection bias is high. Useless results.Papanca wrote: ↑Mon Jun 28, 2021 8:14 am What do you guys think about this ?
Abstract
"Are psychedelics able to induce lasting changes in metaphysical beliefs? While it is popularly believed that they can, this has never been systematically tested. Here we exploited a large sample derived from prospective online surveying to determine whether and how beliefs concerning the nature of reality, consciousness, and free-will, change after psychedelic use. Results revealed significant shifts away from ‘physicalist’ or ‘materialist’ views, and towards panpsychism and fatalism, post use. These changes remained detectable at 6 months, and were associated with the extent of past use and improved mental-health outcomes. Path modelling suggested that the belief-shifts were moderated by impressionability at baseline and mediated by perceived emotional synchrony with others during the psychedelic experience. The observed belief-shifts post psychedelic use were confirmed by data from an independent controlled clinical trial. Together, these findings imply that psychedelic use has a causal influence on metaphysical beliefs – shifting them away from ‘hard materialism’."
https://psyarxiv.com/f6sjk
To demonstrate this, you need a randomly selected group of people that would ideally have measurable variation in metaphysical beliefs. You then remeasure after the experience. Ideally the experience would take place in some sort of neutral setting - one with no connotations of religion or spirituality. Possibly something like an ordinary home.
With all of variations in set and setting, plus the self-selection bias of an online survey, this research contributes little or nothing.
This isn't just with psychedelics either. Prominent 20th century philosopher AJ Ayer had a Near-Death Experience later in his life & he said that it made him doubt that his consciousness would be extinguished upon death but that "he continued to hope that it would."
As much as I wish psychedelics & other altered states were enough to convince people that physicalism is BS, they don't seem to be adequate enough for some people.