PCT (suomeksi Havaintosäätöteoria) on William (Bill) Powersin kehittämä teknologisten kontrollijärjestelmien (servomekanismien) matemaattiseen teoriaan perustuva teoria elävien olentojen toiminnasta.
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PCT is a theory of action of living beings, developed by William (Bill) Powers from the mathematical principles of technological control systems or servomechanisms.
Here is a my draft of an English introduction to PCT written from the point of view of my current action theoretical semiotics: PCT introduction
Täältä löytyy harjoitustyönä tekemäni kahden minuutin johdantoluento havaintokontrolliteoriaan: https://vimeo.com/241503968 (Two minute introduction to PCT in Finnish)
See also my newest publications
Tärkeimmät alkuperäiset lähteet ovat / The most important canonical references are:
Powers, W. T. (1973/2005) Behavior: The control of perception. New Canaan: Benchmark Publications.
Powers, W. T. (1998) Making sense of behavior: The meaning of control. Montclair, NJ: Benchmark Publications.
Powers, W. T. (2008) Living control systems III: The fact of control. Bloomfield, NJ: Benchmark Publications.
There are some very rich archives of PCT material in the Internet:
Most important is the site of the International Association of Perceptual Control Theory: http://www.iapct.org/
Perceptual Control Theory Archives. http://www.pctresources.com/
Perceptual Control Theory (PCT) Project. https://www.researchgate.net/project/Perceptual-Control-Theory-PCT
There is also an email discussion forum: http://discourse.iapct.org/