Baseball: The control of perception, Dancing

[From Rick Marken (980121.0740)]

Bruce Abbott (980120.1440 EST)

How do you define "angular velocity," and what _is_ the reference
value for this angular velocity?

It's the change in the vertical angle between fielder and ball per
unit time. The reference is the desired angular velocity in
radians/unit time (.035, indicating a desire to have the vertical
angle between fielder and ball _increase_ at the rate of .035
radians/unit time, seemed to work best). Since we don't really
see angles I re-wrote the program so that the controlled variable
is "vertical velocity" -- the rate of change in the vertical
projection of the ball (the sine of vertical angle) on the retina.
This worked fine too (but I had to change the value of the reference
slightly -- to .03 -- since the scale of the controlled variable
changed).

You seem to have an excellent understanding of the current version
of the baseball catching program since you described exactly how
it works in the rest of your post. You could be a _great_ control
theorist, Bruce, if you could just stop trying to mentally fit PCT
into the Procrustean bed of conventional psychology. You are really
the only person standing between you and PCT;-)

Jeff Vancouver (980120.13:50) --

Am I starting to sound like Hans yet?

Nope. You still sound like Jeff Vancouver. I'll leave it to
you to decide whether that's better or worse than sounding like
Hans;-)

By the way. I did speak to soon, apparently; I got my first
reprint request yesterday. Now all I need are some reprints
to send to the requestors;-)

Best

Rick

···

--
Richard S. Marken Phone or Fax: 310 474-0313
Life Learning Associates e-mail: rmarken@earthlink.net
http://home.earthlink.net/~rmarken

[From Bruce Nevin (980121.1329 EST)]

Rick Marken (980121.0740) --

Bruce Abbott (980120.1440 EST)

You could be a _great_ control
theorist, Bruce, if you could just stop trying to mentally fit PCT
into the Procrustean bed of conventional psychology. You are really
the only person standing between you and PCT;-)

How do you tell what he is doing by watching what he is doing?

[From Rick Marken (980121.1100)]

Bruce Nevin (980121.1329 EST) --

How do you tell what he [Bruce Abbott] is doing by watching what
he is doing?

Because I have Tested (using verbal statements as disturbances to
the variiable I _think_ he might be controlling) to determine what
variables Bruce A. is controlling. I now know, for example, that
Bruce A. is controlling for a perception that could be verbally
described as "PCT is consistent with conventional psychology". He
is also controlling for a variable that might be called "conventional
psychological research is mostly good stuff".

Bruce A. has been Testing me too and he knows that I am controlling
for (among other things) a perception that could be verbally
described as "PCT is _not_ consistent with conventional psychology".
He knows that I am alsio controlling for a perception of conventional
psychological research as useless for PCT. This difference in what
we control for is the reason for our frequent conflicts; Bruce
and I are controlling for some of the same perceptions, but relative
to very different reference values.

It's really pretty easy to tell (generally) what people are controlling
for; I would be surprised if people who have been on this net for more
than a few months couldn't make a pretty good guess at what I'm
controlling for;-)

Best

Rick

···

--
Richard S. Marken Phone or Fax: 310 474-0313
Life Learning Associates e-mail: rmarken@earthlink.net
http://home.earthlink.net/~rmarken

What I find truly disconcerting is not the lack of request for reprints,
but the lack of engagement. I long for just one phone call (or email) from
a colleague challenging something I have said.

Jeff

Sincerely,

Jeff

···

At 07:44 AM 1/21/1998 -0800, you wrote:

[From Rick Marken (980121.0740)]

By the way. I did speak to soon, apparently; I got my first
reprint request yesterday. Now all I need are some reprints
to send to the requestors;-)