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ERIC Number: EJ935968
Record Type: Journal
Publication Date: 2011
Pages: 16
Abstractor: As Provided
Reference Count: 42
ISBN: N/A
ISSN: ISSN-0144-929X
Increased Memory Load during Task Completion when Procedures Are Presented on Mobile Screens
Byrd, Keena S.; Caldwell, Barrett S.
Behaviour & Information Technology, v30 n5 p643-658 2011
The primary objective of this research was to compare procedure-based task performance using three common mobile screen sizes: ultra mobile personal computer (7 in./17.8 cm), personal data assistant (3.5 in./8.9 cm), and SmartPhone (2.8 in./7.1 cm). Subjects used these three screen sizes to view and execute a computer maintenance procedure. Results from 65 student participants indicated a significant difference in completion times between the three screen sizes [F(2, 120)=690, p less than 0.050], but no differences in subjectively assessed cognitive workload, errors or performance time. Competing memory strategies in procedure-based tasks were revealed through the access frequency and amount of time subjects spent reading the procedure before starting the experiment [F(2, 105)=25.17, p less than 0.001]. When using the 7 in./17.8 cm screen, users read more of the procedure before executing the procedure. In contrast, when using the smaller screen, users sampled the procedure in longer intervals during execution. (Contains 11 figures.)
Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Indiana