i-com Band 14 (2015) Heft 2

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Zeitschriftenartikel
Modeling Interruption and Resumption in a Smartphone Task: An ACT-R Approach
(i-com: Vol. 14, No. 2, 2015) Wirzberger, Maria; Russwinkel, Dr.-Ing. Nele
This research aims to inspect human cognition when being interrupted while performing a smartphone task with varying levels of mental demand. Due to its benefits especially in the early stages of interface development, a cognitive modeling approach is used. It applies the cognitive architecture ACT-R to shed light on task-related cognitive processing. The inspected task setting involves a shopping scenario, manipulating interruption via product advertisements and mental demands by the respective number of people shopping is done for. Model predictions are validated through a corresponding experimental setting with 62 human participants. Comparing model and human data in a defined set of performance-related parameters displays mixed results that indicate an acceptable fit – at least in some cases. Potential explanations for the observed differences are discussed at the end.