Proceedings of the ACM symposium on Virtual reality software and technology
Effective search results summary size and device screen size: is there a relationship?
Information Processing and Management: an International Journal
The effects of prior experience on the use of consumer products
Universal Access in the Information Society
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The interplay of beauty, goodness, and usability in interactive products
Human-Computer Interaction
Serial hook-ups: a comparative usability study of secure device pairing methods
Proceedings of the 5th Symposium on Usable Privacy and Security
The Factor Structure of the System Usability Scale
HCD 09 Proceedings of the 1st International Conference on Human Centered Design: Held as Part of HCI International 2009
The Effect of Brand on the Evaluation of Websites
INTERACT '09 Proceedings of the 12th IFIP TC 13 International Conference on Human-Computer Interaction: Part II
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Research Methods in Human-Computer Interaction
Research Methods in Human-Computer Interaction
Variation in importance of time-on-task with familiarity with mobile phone models
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The effects of screen-size and communication modality on psychology of mobile device users
CHI '11 Extended Abstracts on Human Factors in Computing Systems
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Given the wide adoption of smartphones, an interesting debate is taking place regarding their optimal screen size and specifically whether possible portability issues counterbalance the obvious benefits of a larger screen. Moreover, the lack of scientific evidence about the concrete impact of mobile phones' screen size on usability raises questions both to practitioners and researchers. In this paper, we investigate the impact of a mobile phone's screen size on users' effectiveness, efficiency and perceived usability as measured using System Usability Scale (SUS). An experiment was conducted with 60 participants, which interacted with the same information seeking application on three different devices of the same brand that differed on their screen size. A significant effect of screen size on efficiency was derived, leading to an important finding that users who interact with larger than 4.3in screens are more efficient during information seeking tasks.