ACT-R the theory is embodied in ACT-R the software, as a set of functions and algorithms implemented in Common Lisp. Since the ACT-R implementation lives in Lisp, the aspiring cognitive modeler must either have access to some Lisp environment or use the standalone version of the ACT-R software.
This page holds information about the current version of the software, ACT-R 7.
Older versions of the software are still available on the old software page.
The source code zip file contains all the Lisp source code as well as the tutorial, reference manuals, and the ACT-R Environment GUI.
See the QuickStart.txt file for startup instructions (that file is also included in the docs directory of the distribution).
The standalone version of the software runs ACT-R without the need to have a separate Lisp application installed.
Installation and running instructions can be found in the included Readme files because they differ by version.
If you have any problems or questions about the ACT-R software please contact Dan.
The unit texts can be downloaded separately, but are already included in the software distributions above.
The manuals for the ACT-R software are included in the docs directory of the software distributions and also available here:
Slides on updates to ACT-R 7 during the 2016 ACT-R PGSS.
Slides with some notes on the renaming of ACT-R 6.1 to ACT-R 7 after the 2015 ACT-R Workshop.
Slides on the updates to ACT-R 6.1 presented at the 2015 ACT-R Workshop.
Slides on the differences between ACT-R 6.1 and the previous version ACT-R 6.0.