Volume 13 · Number 2 · Pages 296–298
Plasticity Within and Across Multiple Levels

Arthur Hjorth

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Open peer commentary on the article “Plasticity, Granularity and Multiple Contingency - Essentials for Conceiving an Artificial Constructivist Agent” by Manfred Füllsack. Upshot: Füllsack presents the thought-provoking concept of a minimally artificial constructivist agent - the MACA. The MACA, unlike most agents, is not pre-programmed to respond to the world but is rather programmed to emergently develop predispositions through the evolution of an Artificial Neural Net. Füllsack posits three criteria for the MACA, including a minimum level of plasticity. Contrasting the models presented in the article with some of my own work, I raise two questions, particular to multi-level agent-based modeling, about how to interpret Füllsack’s concept of minimal level of plasticity.


Hjorth A. (2018) Plasticity within and across multiple levels. Constructivist Foundations 13(2): 296–298. http://constructivist.info/13/2/296

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Head B., Hjorth A., Brady C. & Wilensky U. (2015) Evolving agent cognition with netlogo levelspace. In: Yilmaz L., Moon I.-C., Chan W. K. & Roeder T. (eds.) Proceedings of the 2015 Winter Simulation Conference. IEEE Press, Piscataway NJ: 3122–3123. ▸︎ Google︎ Scholar
Hjorth A., Head B. & Wilensky U. (2015) LevelSpace NetLogo extension. Center for Connected Learning and Computer-Based Modeling. Northwestern University, Evanston IL. http://ccl.northwestern.edu/levelspace
Wilensky U. (1997) NetLogo wolf sheep predation model. Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston IL. http://ccl.northwestern.edu/netlogo/models/WolfSheepPredation

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