@inproceedings {Simula.SE.156,
	title = {Exploring Potential Usability Gaps When Switching Mobile Phones: an Empirical Study},
	journal = {HCI 2007: 21th British HCI Group Annual Conference},
	year = {2007},
	month = {September},
	pages = {109-116},
	publisher = {British Computer Society},
	type = {Conference},
	address = {BCS},
	abstract = {The study presented explores potential usability gaps when users switch from a familiar to an unfamiliar mobile phone interface. An experiment was performed where nine users familiar with Sony-Ericsson T630 and nine familiar with Nokia 7250 performed tasks on both phones. On average, test subjects spent more time to finish tasks with an unfamiliar phone than with a familiar one. For most tasks, there was no significant difference in completion time between the first-time Nokia users and the first-time Sony-Ericsson users. Only adding a contact to the address book was faster for new Nokia users than for new Sony-Ericsson users. In terms of both completion time and subjective ranking of difficulty, first-time Nokia users found this phone easier to use than first-time Sony-Ericsson users. Potential explanations for these observations are presented and discussed.},
	isbn = {978-1-902505-94-7},
	author = {Yamashita, Aiko and Barendregt, Wolmet and Fjeld, Morten},
	editor = {Linden J. {Ball} and Sasse, Angela and Sas, Corina and Thomas C. {Ormerod} and Dix, Alan and Bagnall, Peter and McEwan, Tom}
}
