The authors estimate weighted mean values for nine information processing parameters for older adults using the Card, Moran, and Newell (1983) Model Human Processor model. The authors validate a subset of these parameters by modeling two mobile phone tasks using two different phones and comparing model predictions to a sample of younger (N = 20; Mage = 20) and older (N = 20; Mage = 69) adults. Older adult models fit keystroke-level performance at the aggregate grain of analysis extremely well (R = 0.99) and produced equivalent fits to previously validated younger adult models. Critical path analyses highlighted points of poor design as a function of cognitive workload, hardware/software design, and user characteristics. The findings demonstrate that estimated older adult information processing parameters are valid for modeling purposes, can help designers understand age-related performance using existing interfaces, and may support the development of age-sensitive technologies. © 2007 American Psychological Association.
CITATION STYLE
Jastrzembski, T. S., & Charness, N. (2007). The Model Human Processor and the Older Adult: Parameter Estimation and Validation Within a Mobile Phone Task. Journal of Experimental Psychology: Applied, 13(4), 224–248. https://doi.org/10.1037/1076-898X.13.4.224
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