The small screens of mobile Internet devices, combined with the increasing complexity of mobile tasks, create a serious obstacle to usability in the mobile Internet. One way to circumvent the obstacle is to organize an information structure with efficient depth/breadth trade-offs. A controlled lab experiment was conducted to investigate how screen size and information structure affect user behaviours and perceptions. The moderating effects of task complexity on the relationship between screen size/information structure and user navigation/perceptions were also investigated. Study results indicate that both information structure and screen size significantly affect the navigation behaviour and perceptions of mobile Internet users, Task complexity was also found to heighten the influence of information structure on user behaviour and perceptions. The paper ends with a discussion of theoretical and practical implications, among them a key implication for mobile Internet businesses: for corporate intranet systems as well as m-commerce transaction systems, the horizontal depth of information structures should be adapted to task complexity and anticipated screen size.
Bibliographical noteFunding Information:
The present research has been supported by a research grant from the Korea Research Foundation [KRF-2003-042-B00045]. The authors are grateful to Dr. Joonah Park, Jeun Kim, and Soyoung Kyung at the HCI Lab, to Enah Kim and Sujin Kim at Wide-rthan.com, and to the editors and reviewers at AMCIS 2003 and the BIT special issue on HCI in MIS.
All Science Journal Classification (ASJC) codes
- Developmental and Educational Psychology
- Arts and Humanities (miscellaneous)
- Social Sciences(all)
- Human-Computer Interaction