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- Path: sparky!uunet!wupost!psuvax1!psuvm!auvm!AERO.ORG!MARKEN
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- Posted-Date: Tue, 05 Jan 93 18:16:33 PST
- Message-ID: <199301060216.AA13540@aerospace.aero.org>
- Newsgroups: bit.listserv.csg-l
- Date: Tue, 5 Jan 1993 18:16:33 PST
- Sender: "Control Systems Group Network (CSGnet)" <CSG-L@UIUCVMD.BITNET>
- From: marken@AERO.ORG
- Subject: Why adopt a different theory?
- Lines: 75
-
- [From Rick Marken (920105.1800)]
-
- Greg Williams (920105 - 2) --
-
- >I think they would want to [change to PCT] if
- >PCT allowed them to solve problems which they already want to solve but cannot
- >solve without PCT.
-
- >To date, I've seen more emphasis on trying to influence nonPCTers to
- >change their notions about what problems are important than on trying to use
- >PCT to solve the problems nonPCTers are having problems with.
-
- This is indeed a big problem. But it's not that PCTers are arguing that
- the problems of the nonPCTers and unimportant; just that they may not be
- problems at all, or problems only because they are looking at behavior
- the wrong way. Just today I was asked to help with a task at work that
- involved trying to find a "reliable and valid test instrument" that could
- be used to ascess some behavioral variables. Well, there is a problem;
- how can PCT help solve it? First I could point out that the
- tests are useless unless the reliabilities are on the order of .99. There
- are no such tests and right off hand I don't know how to design them.
- I think they are just barking up the completely wrong tree simply because
- this is the conventional way of dealing with things (by the way, I will
- help with this task -- because they are paying me to do it -- I will
- statistically evaluate their data until their hair turns blue -- and if
- possible I will gently suggest that maybe the whole exercise is useless.
- But I can't tell them how PCT can help them solve their problem--designing
- a more reliable and valid test--because 1) I don't know and 2) I think the
- answer would require a major shift in the direction of the whole effort --
- away from what they consider their problem).
-
- >Beating them at YOUR game is guaranteed to merit a
- >"so what?"
-
- But part of the problem is that PCT says that much of their game
- is based on an illusion -- or at least a misconception. So it's
- not that simple to just say "watch, we can solve your problem". As
- I said above -- many of their problems are simply not problems from
- a PCT perspective.
-
- I'm also surprised that you're saying this given your experience
- with "Science"; you offered a model that solved a problem that was
- only partially solved (and inelegantly, at that) by some "biggies"
- in the field of motor behavior; was anyone interested in it?
-
- I have done research which could be seen as providing a solution
- (or, at least, the start of a solution) to some problems of concern
- to psychologists -- the problem of how to coordinate actions in a
- disturbance prone environment. My "Degrees of freedom" paper explained
- the solution to two specific "problems" (and called such) in motor
- behavior psychology; the paper was published -- but I have never seen
- any use of the approach in recent editions of the Journal of Motor Behavior
- or any other place where one might expect to find motor behavior
- problem solvers solving problems.
-
- I know that you believe that PCTers should spend more time showing what
- they can do to help the nonPCTer and less time saying what the nonPCTer
- can't do. That sounds GREAT -- but I have tried it -- earnestly -- with
- virtually no success. Bill has done it too -- look at the 1971 Behavioral
- Science paper, for example -- a beautiful model of operant behavior that
- predicted the data to within 1% (as I recall) and not a SINGLE reference
- to it in the operant literature.
-
- Maybe a shotgun approach might help; why don't you describe all the
- problems you know about (in any field) that PCT might help with.
- Then we could try to solve ALL those problems and maybe a person
- dealing with ONE of those problems will notice. I'm really interested
- in knowing what these PROBLEMS are that people need to have solved?
- What if they are problems like "how does reinforcement strengthen
- behavior"? Do you think they would really want to know the solution
- to THAT problem?
-
- Best
-
- Rick
-