Fidelity Issues in Cognitive Architectures for HCI Modeling: Be Careful What You Wish For 1

The goal of research to develop cognitive architectures is to increase the accuracy and the amount of detail of the mechanisms and phenomena represented in the architecture. However, in practical modeling for interface design, more approximate and coarser-grained architectures can be not just easier to use, but also avoid not-yet-resolved scientific puzzles that distract from the practical modeler's goals. Two examples are given for how high-fidelity issues can be avoided or simplified for practical modeling.

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