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- Newsgroups: sci.skeptic
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- From: rdnelson@phoenix.Princeton.EDU (Roger D. Nelson)
- Subject: Re: Help
- Message-ID: <1992Nov19.183104.29669@Princeton.EDU>
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- Organization: Princeton University
- References: <1992Nov18.170630.9301@iccgcc.decnet.ab.com> <1992Nov19.003834.19231@cs.yale.edu> <1992Nov19.093102.9305@iccgcc.decnet.ab.com>
- Date: Thu, 19 Nov 1992 18:31:04 GMT
- Lines: 30
-
- In article <1992Nov19.093102.9305@iccgcc.decnet.ab.com> kambic@iccgcc.decnet.ab.com (Bonus, Iniquus, Celer - Delegitus Duo) writes:
- >
- >Susan Blackmore worked in England in the early 80's to develop an operational
- >definition of OOB's so that they could be tested. She started working on
- >standard psi type issues, but for each model proposed, was able to measure any
- >effect. All of the results of her statistical tests indicated that psi effects
- >were not operating. (Maybe Roger Nelson can jump in here also.) BTW, she was
- >at that time, according to her articles, a strong believer in psi related
- >effects.
-
- Without going into some detail, my jumping in can only point in a
- direction that amounts to suggesting that while Blackmore is a good
- researcher in most respects, her real forte is in writing good prose
- explaining fringe topics. The explanations are not necessarily correct,
- but are, I think, honest efforts to come up with at least workable and
- sometimes testable hyopotheses. With regard to the psi research she
- did, from which she concluded there was "no psi there", a cursory
- examination shows that all the studies were small, hence subject to
- so-called Beta error, namely the conclusion that no effect exists when
- there is a real effect. This happens at a predictable rate in
- experiments that have insufficient statistical power, and in the psi
- business, because the putative effects are by any standard very small,
- the majority of experiments are too weak to reliably detect effects.
- There are, of course other possible explanations for Blackmore's failure
- to find evidence, including the one she has chosen, namely, no psi.
- She might agree, however, that her own research was not an adequate
- basis for drawing that conclusion.
-
- Roger
-
-