William Glasser's: Control Theory

As a graduate student in education, I have been exposed very heavily to
S-R theory and the conclusions it brings with it. I did not realize
that there was a competing theory until I ran across a book called, _The
_Quality_School_ by William Glasser (1990, I think). As an educator,
everything we are trained to do in the classroom is based on S-R theory
and frankly, it isn't working anymore. Glasser takes a different
approach, which he calls control theory, that theorizes that people
control their own behavior based on what they think is going to meet
their needs the best.

The questions I have are:

    1) Is Glasser's theory a spinoff of PCT, or is this his own theory?

    2) How does Glasser's Control theory differ from PCT?

    3) Would anyone have any introductory papers, dissertations or
    books to recommend to me as I try to understand PCT vs. S-R theory?

I am sorry if you have talked about this recently. I have tried to read
this newsgroup, but don't have the necessary background. I have done
literature and book searches on PCT without much success. None of my
Psychology teachers seem to know much about PCT, so I am coming to the
horses mouth itself.

Thanks in advance for any information you can provide.

Brian Hartman
Masters in Teaching
Andrews University
hartman@andrews.edu