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Formerly the Control Systems Group

28th Conference of the IAPCT      Oct. 11-13, 2018

This year's conference will be held in the heart of the Northwestern University campus in Evanston, Illinois

at the Garret-Evangelical Theological Seminary

Dear Prospective Attendees,

Scientists and scholars who will be presenting and in attendance have spent many years applying the principles of Perceptual Control Theory (PCT) in their own work and personal lives. The general consensus is that PCT represents a paradigm shift in understanding how and why control systems, both living and artificial, behave - they behave not to respond to environmental stimuli, but to control their own perceptions of the environment in which they exist. The implications of PCT are far ranging and that is why we have such a diversity represented in our attendance. If you are new to PCT, we hope that you will consider opening your hearts and minds to the new world that PCT offers to unfold for you as it has for these long time supporters of the life's work of William T. Powers. Please consider taking advantage of the many years of cumulative understanding of this great work that they represent. Northwestern University Archives has recently completed cataloguing the papers of Bill Powers, as he was known by his friends and followers, and these papers will be available in their entirety the day before the conference on October 11 in the archives room of the Deering Library. We welcome your curiosity and questions and hope to see you there!




Allie Powers

Main IAPCT website



Fill out form below

to contact the IAPCT:



NU Students and Faculty: Free admission (Oct 12 & 13 only)

If you would like to attend but do not wish to purchase lunch, please contact us using the form in the lower left-hand corner of this web page with your name and field of study.

If you do wish to join us for lunch

please fill out the form to the right

and mail it to us by September 30th

Thank you!



Registration:      click here

IAPCT Members: $100.00 (USD)

Non-Members $135.00 (USD)

Yearly membership is $60 and may be paid with registration.

Conference Schedule:

                                     click here


General Schedule:

Thursday (October 11)

  • Come a day early and spend the day in the Deering Library archives with the William T. Powers collection

  • Attend the Annual Members Meeting at 5:00pm and vote on issues pertaining to the IAPCT and elect new board

  • Join us for a reception dinner at 6:00 followed by a social (This event costs an additional fee of $50 and is open to all)

Friday and Saturday (October 12 & 13)

  • Presentations and panel discussions 9:00am - 5:00pm. Lunch included (students and faculty attending at no charge pay a small fee if you wish to join us for lunch)

  • Dinner will be an optional, pay-your-own, social affair. If you wish to join in as a group, please email Allie so she may include you in the reservation.


There are numerous hotels in the area, however this is a busy time of year and rates are increasing as we get closer to the conference date. It is strongly suggested that you reserve your lodging as soon as possible. We have a block of rooms at the Doubletree at a fixed rate, however, you may be able to find better rates at hotels such as the Super 8 by Wyndham in Morton Grove, IL.

DoubleTree Hotel by Hilton Hotel Chicago

9599 Skokie Blvd., Skokie, IL 60077-1314

1-847-679-7000 ph  or  1-800-222-TREE

1-847-679-0810 fax


Please mention "IAPCT Conference" or group code "IAP" when reserving in order to get the rates listed below.

  • $135/night +taxes/fees for two people (three people: $145, four people: $155).

  • Check in at 3pm - Check out at 12:00pm

If you wish to share a room or have any other questions, please contact Allie using the form to the left (those messages go to


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