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- Date: Wed, 6 Jan 1993 19:10:11 EST
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- From: Avery Andrews <andaling@FAC.ANU.EDU.AU>
- Subject: micro/macro-phenomena; statistics
- Lines: 41
-
- [Avery Andrews 930106.1856]
- Bill Powers (930105.2130)
-
- Putting what Bill says in my terms:
-
- a) conventional psychologists aren't interested explaining
- macro-phenomena
-
- b) their quantitative standards for micro-phenomena are too
- low to prevent them from getting buried in trash.
-
- I have a suspicion that this is true of the institutional structure
- of psychology, though I suspect that (a) is false for many
- individual psychologists, and even more for people on the margins
- of psychology, such as AI-ers, broad minded linguists, etc.
-
-
- Switching subjects, here's a little experiment I did where statistical
- evaluation of the results seems essential. Put a piece of paper on
- your lap, on a clipboard or something similar, and draw a circle with
- a dot in the center. Put your pen on the dot, then close your eyes,
- lift the pen from the paper, move it around for a while, and try to put
- it back on the dot, all without looking. I find that I can get it
- within 2.5cm of the original position, possibly improving to 1.5cm
- with practice, but certainly can't get it back to exactly where it is
- (without looking), and also not to exactly the same place, so the
- only useful description of the results is a statistical one.
-
- My conjecture is that there is some component of the assortment of
- control systems involved here that is being pushed to its limits of
- resolution, kinesthetic memory being one obvious possibility, but
- there are others. I would assume that there are many who would
- do better than I at this (blind people, surgeons, Tai Chi adepts,
- dancers ...), & that the degree of precision attainable by
- the kinesthetic systems is a significant thing to investigate.
-
- I lack the mathematical and conceptual tools to say anything more useful
- than this, though it does make me think of some of the things that Martin
- Taylor has been saying.
-
- Avery.Andrews@anu.edu.au
-