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30th IAPCT Conference
and 2020 Annual Meeting

July 30‒August 2, 2020
Thursday through Sunday

Northwestern University
Evanston, Illinois

Conference Dates

NB: The following preliminary information is merely suggestive, based on prior conferences, and will be updated as arrangements develop.

Week of July 27–31
  • Explore the William T. Powers Archive

Thursday 30 July
  • Explore the William T. Powers Archive

  • Annual Meeting, including elections
Friday 31 July
  • Presentations and Panel Discussions
Saturday 1 August
  • Presentations and Panel Discussions
Sunday 2 August
  • Outing
Week of August 2–8
  • Explore the William T. Powers Archive

Perceptual Control Theory (PCT) is the science of purpose: how living things use their behavior to satisfy their survival requirements and their individual and social preferences. The technical term for this is control. PCT provides a unified and comprehensive theory and research methodology for the many sciences of life, including biology, neuroscience, psychology, linguistics, anthropology, and sociology, among others.

Each presenter's field poses unique challenges in identifying and testing controlled perceptual variables, and unique opportunities for reconceptualizing observational and experimental methods and data of the field and doing truly pioneeering work. Every field presents challenges communicating with those who do not perceive the phenomenon of control, and opportunities for cross-disciplinary research and discovery that becomes possible with the life sciences all working on a common theoretical, mathematical, and methodological foundation.

Call for Papers

NB: The schedule will be provided in due course.

Conference Venue

Norris Center

Meeting and presentation rooms

The Norris Student Center is conveniently at the heart of the Northwestern campus, with recently renovated meeting and presentation spaces that are well furnished and equipped.

Deering Library

William T. Powers Archive

Spend a day or more researching in the collection of Bill Powers' publications, unpublished writings, and correspondence.

Archivists make available to us the many boxes of publications, drafts, notes, correspondence and other materials in the archive. If you want to plan ahead and make lists of what you want to see, you can use the archive finding aid ahead of time.


NB: The following preliminary information is merely suggestive, based on prior conferences, and will be updated as arrangements develop.

Register for the conference with this registration form.

  • Non-Members $135.00 (USD).
  • IAPCT Members: $100.00 (USD).
    Annual membership is $60 and may be paid with registration.
  • NU Students and Faculty: NO CHARGE (Oct 12 & 13). Use this NU registration form, indicating your field of study and whether you would like to purchase lunch.

Please email your completed registration form to Alison Powers < iapctconference@gmail.com> or mail it to

IAPCT Conference 2018
c/o Allie Powers
1825 Sussex Street, Lafayette, CO 80026

Credit cards are accepted. For security, don't send credit card information in email. Put your card number, expiration date, and CVV/security code on the registration form and mail it. Make sure your address includes the zipcode.


NB: The following preliminary information is merely suggestive, based on prior conferences, and will be updated as arrangements develop.

We are investigating availability of dorm rooms during the university's summer sessions. Given prior commitments, we will look for Air B&B or VRBO accommodation with less cost and more convenience. An entire house is possible. Other accommodations that we have used in the past include:

DoubleTree Hotel by Hilton Hotel Chicago
9599 Skokie Blvd., Skokie, IL 60077-1314
1-847-679-7000 (fax: 1-847-679-0810)

There is a restaurant in the hotel and a large shopping mall nearby. Northwestern University is about 4 miles away (15 minutes by car). Mention the IAPCT conference to get the block rate.

Morton Grove Inn
9424 Waukegan Rd.
Morton Grove, IL 60053
1-847-965-6400 ph

Rates currently range from $65.00 to $75.00 +taxes and fees per night. This hotel is 8 miles away (25 minutes by car) from the Northwestern campus and about 3.5 miles from the DoubleTree (8 minutes by car).

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