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ERIC Number: EJ783069
Record Type: Journal
Publication Date: 2007-Dec
Pages: 25
Abstractor: Author
Reference Count: 0
ISSN: ISSN-1076-898X
The Model Human Processor and the Older Adult: Parameter Estimation and Validation within a Mobile Phone Task
Jastrzembski, Tiffany S.; Charness, Neil
Journal of Experimental Psychology: Applied, v13 n4 p224-248 Dec 2007
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; M-sub(age) = 20) and older (N = 20; M-sub(age) = 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.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A