Monday, March 10, 2014

Gorilla video

A poster at Skeptiko recently brought up an article from Dean Radin talking about the disconnect between his perception of the strength of the evidence for psi, and how that evidence seems to be ignored by scientists in general.  I wrote a response, not realizing that the article was 5 years old, mostly because the mis-use of the gorilla video is a pet peeve of mine.  (By the way, this particular book is invaluable for releasing pet-peeve-tension.) :-)

https://realitysandwich.com/7283/what_gorilla/

Radin:
"Imagine you're watching a basketball game. Your favorite team is wearing white and the other team is in black. In the midst of the action, someone in a dark gorilla suit calmly walks to the center of the court, waves to the crowd, then walks off the court. Do you think you would notice this peculiar event? Most people might say yes. Most people would be wrong."
...
"Because of these blind spots, some common aspects of human experience literally cannot be seen by those who've spent decades embedded within the Western scientific worldview. That worldview, like any set of cultural beliefs inculcated from childhood, acts like the blinders they put on skittish horses to keep them calm. Between the blinders we see with exceptional clarity, but seeing beyond the blinders is not only exceedingly difficult, after a while it's easy to forget that your vision is restricted.
An important class of human experience that these blinders exclude is psychic phenomena, those commonly reported spooky experiences, such as telepathy and clairvoyance, that suggest we are deeply interconnected in ways that transcend the ordinary senses and our everyday notions of space and time."
My response:
"A bit of a nitpick (because the gorilla video experiment has been over-used and abused)...what you describe isn't related to the inattentional blindness demonstrated in the gorilla video.  Merely having a preference for one or the other team, while watching a game, does not lead to missing the the gorilla.  Most people notice the gorilla under those conditions.  You have to give people a different task which fully occupies their attention, if you want them to fail to notice the gorilla.  And even then,  half the people will still notice the gorilla.

What you are describing, with respect to the perception of psi among scientists in general, is the effect of how our prejudices tend to influence our judgement.  In this case, fans of the white team will see the gorilla.  But whether they see it as disruptive vs. helpful to their team may depend upon its colour.

I agree that discussions which take place in the media tend to misrepresent what is happening at the scientific level.  I propose that the way to draw other scientists into taking the research seriously is to follow the path of evidence-based medicine, with respect to practices which reduce the risk of bias and the production of false-positive results.  As it is, research performed under conditions where problems in design, implementation and/or analysis can grossly inflate the number of falsely positive studies, can be easily dismissed as reflecting the result of bias, rather than a true effect."

Linda

2 comments:

  1. I think you are being too kind when you say "A bit of a nitpick ..." As you then point out, it's a gross misuse of the gorilla effect.

    ~~ Paul

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    Replies
    1. Well, it's a gross misuse, but Radin's point is still valid. It's just not valid because of the gorilla effect, but because our prejudices influence our judgement. However, I propose that good quality evidence will overcome prejudices and that the current disregard for parapsychology research is based on the suspicion that it isn't at the point where the quality is good.

      Linda

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