# Methodology

**URL:** http://discourse.iapct.org/c/research/methodology/8.md

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## [About the Methodology category](http://discourse.iapct.org/t/about-the-methodology-category/16)

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**Author:** [@forumControlSystem](http://discourse.iapct.org/u/forumControlSystem)\
**Replies:** 0\
**Last updated:** [September 8, 2019, 2:08pm UTC](http://discourse.iapct.org/t/about-the-methodology-category/16 "2019-09-08T14:08:56Z")

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Discussion on innovative research methodology on PCT. Any suggestions?

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## [Collaboration of modeler and programmer](http://discourse.iapct.org/t/collaboration-of-modeler-and-programmer/15966)

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**Author:** [@bnhpct](http://discourse.iapct.org/u/bnhpct)\
**Replies:** 0\
**Last updated:** [October 9, 2022, 11:53pm UTC](http://discourse.iapct.org/t/collaboration-of-modeler-and-programmer/15966 "2022-10-09T23:53:56Z")

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This video of Bill was made at the meeting in Durango in 1994. The first half encapsulates the essentials of PCT. In the first part of that, Bill describes two stages. First, the diagrams that represent a model of what y…

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## [The Test for the Controlled Variable](http://discourse.iapct.org/t/the-test-for-the-controlled-variable/134)

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**Author:** [@bnhpct](http://discourse.iapct.org/u/bnhpct)\
**Replies:** 38\
**Last updated:** [August 26, 2022, 7:41pm UTC](http://discourse.iapct.org/t/the-test-for-the-controlled-variable/134 "2022-08-26T19:41:24Z")

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The core methodology of PCT is The Test for the Controlled Variable (or “for the Controlled Quantity”) . “The Test” has been described in a number of places, but questions and requests for clear definition still recur in…

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## [Testing with Naturally Occurring Disturbances](http://discourse.iapct.org/t/testing-with-naturally-occurring-disturbances/15747)

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**Author:** [@rsmarken](http://discourse.iapct.org/u/rsmarken)\
**Replies:** 5\
**Last updated:** [January 16, 2021, 2:19am UTC](http://discourse.iapct.org/t/testing-with-naturally-occurring-disturbances/15747 "2021-01-16T02:19:46Z")

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A nice (actually, rather chilling) example of using a naturalistic disturbance to infer a controlled variable occurred on January 6. On that day, insurgents stormed the US Capitol in an attempt to stop the certification …