PCT/EAB comparison list

<[Bill Leach 950704.04:55 U.S. Eastern Time Zone]

[From Bill Powers (950703.0400 MDT)]

deprivation (noun) large error signal
;deprivation as a term seems to me to imply that a disturbance is applied
;that results in a large, sustained error signal

deprivation (verb) overwhelming disturbance (loss of control)
;again, sufficient force is applied to insure that the reference value
;can not be satisfied by any amount or type of behaviour

maintenance of behaviour control or attempt at control
;unfortunately this is a tough one for PCT. There are really two quite
;different situations. The first is where the reference itself calls for
;continous "activity" to remain satisfied but such activity results in
;essentially zero error. The second is the situation where the "activity"
;is the control systems attempt to achieve control.

;this is also one of those difficult "what do you mean by behaviour?"
;issues. When control exists, PCT considers the organism's actions as
;incidental (that is the natural result due to the physical laws related
;to whatever is being controlled. What the organism "is maintaining
;against disturbance" is what is significant.

;from a modeling standpoint, the actions are significant in that the
;model must be able to use the same means of control in the same manner
;as an observed experimental subject.

competing reinforcers parallel control of multiple perceptions
;I think that the specific use of the term perception is more appropriate
;here.

interference of behaviours conflict
;a very serious problem with this equate is that what appears to the
;observer to be "interference of behaviours" may not represent a conflict
;to the organism at all.

-bill

[From Bill Powers (950703.0400 MDT)]

Bruce Abbott, Dennis Delprato, Samuel Spence, Rick Marken, Tom Bourbon,
and all interested in the PCT/EAB controversy:

I think we can begin working on a comparison of EAB ideas and PCT ideas.
Here is an incomplete list, condensed. Each line requires some
explanatory discussion, not provided here. Revisions, additions, and
corrections of errors invited. EAB ideas on the left; corresponding,
alternative, or related PCT ideas on the right.

···

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stimulus input, perception, disturbance
response action, output
outcome, consequence perception, controlled variable
reinforcement (verb) reorganization
reward, reinforcement decreased error signal
punishment, aversive stim. increased error signal
deprivation (noun) error signal
reinforcer (noun) controlled variable
secondary reinforcement hierarchical control
noncontingent reinforcement effect of disturbing variable
selection variation
operant control process
emitted behavior output, action
stimulus value loop gain
contingency, schedule environmental feedback function
maintenance of behavior maintenance of reinforcer
control by consequences control of consequences
competing reinforcers parallel control of multiple inputs
interference of behaviors conflict
discrimination perception
contiguity transport lag (inverse)
satiation level reference level
??? comparison (ref - perception)
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That's a start.
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Best,

Bill P.