From kevin.gluck at us.af.mil Fri Mar 14 16:35:42 2014 From: kevin.gluck at us.af.mil (GLUCK, KEVIN A DR-04 USAF AFMC 711 HPW/RHAC) Date: Fri, 14 Mar 2014 20:35:42 +0000 Subject: [ACT-R-users] Ideation Challenge: Soliciting Ideas for an Annual Computational Cognition Competition Message-ID: <358C5929AD0E82468006A37A29D5811B1FA99E26@52ZHTX-D06-03C.area52.afnoapps.usaf.mil> Colleagues, Please distribute information about this opportunity to any person or organization you think might be interested in submitting an idea. Got a good idea yourself? Submit it! https://www.innocentive.com/ar/challenge/9933054 We look forward to sharing the results of this Ideation Challenge later this year. Regards, Kevin ************ Kevin Gluck, PhD kevin.gluck at us.af.mil -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 5559 bytes Desc: not available URL: From frank.ritter at psu.edu Mon Mar 17 16:12:34 2014 From: frank.ritter at psu.edu (Frank Ritter) Date: Mon, 17 Mar 2014 15:12:34 -0500 Subject: [ACT-R-users] Dancy's successfully defended ACT-R/Phi PhD dissertation today In-Reply-To: <888BD62B-46E4-4B2F-B88F-D8E64962251E@wright.edu> References: <8b6603f7f1242bfd6908bbb0645840735bc.20140228203446@mail121.us2.mcsv.net> <888BD62B-46E4-4B2F-B88F-D8E64962251E@wright.edu> Message-ID: just a quick note, if you have been following Chris Dancy's work on tying ACT-R to a physiology architecture to create ACT-R/Phi, he just successfully defended his dissertation today. code, models, papers, available from him. abstract and title below. cheers, Frank WHY THE CHANGE OF HEART? UNDERSTANDING THE INTERACTIONS BETWEEN PHYSIOLOGY, AFFECT, AND COGNITION AND THEIR EFFECTS ON DECISION- MAKING A Dissertation in Information Sciences and Technology by Christopher L. Dancy II How do physiological and affective processes interact with cognitive processes to change the way we think? How can we better understand the processes that underlie decision-making and choice behavior? This dissertation presents a novel hybrid cognitive architecture, ACT-R/?, which extends the ACT-R cognitive architecture with an integrative model of physiology and a model of affect and emotion. Extending a cognitive architecture with representations of affect and physiology allows the straightforward development of more illustrative computational process models of human behavior that represent experimental results from physiology, neuroscience, and psychology. Computational models were developed that provide an account of how physiological change due to psychological stress or homeostasis can modulate cognitive processes. An experiment was run to explore how subliminal visual emotional stimuli affect physiology and decision-making behavior during the Iowa Gambling Task. Results indicate that effects of subliminal affective stimuli were dependent on participant sex and personality differences. A computational process model was developed that performs the same task and behaves similarly to the participants. Physiological and affective states continually interact with cognitive processes, biasing memory and consequently decisions. Evolved adaptations that support physiological and affective change of behavior (e.g., natural reactions to thirst or hunger) affect the way we learn and make choices. The ACT-R/? hybrid architecture, and the theoretical architectural model it is built upon, can be used to develop models of human behavior that include the necessary accounts of physiology and affect that describe what the body needs and how changes in behavior affects these needs. This improved understanding of the architecture that constrains our behavior gives us a better opportunity to comprehend why we make the decisions we do and how we can use this knowledge to make better decisions.