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Exploring potential usability gaps when switching mobile phones: An empirical study

Aiko Fallas Yamashita ; Wolmet Barendregt ; Morten Fjeld (Institutionen för data- och informationsteknik, Datavetenskap, Interaction Design Collegium (Chalmers))
The 21st BCS HCI Group conference p. 1-8. (2007)
[Konferensbidrag, refereegranskat]

The study presented explores potential usability gaps when users switch from a familiar to an unfamiliar mobile phone interface. A within-subject experiment was performed in which 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 on finishing tasks with an unfamiliar phone than with a familiar one. For two of the four tasks, there was a significant difference in completion time between the first-time Nokia users and the first-time Sony-Ericsson users. The tasks of adding a contact to the address book and sending an SMS to a contact in the address book were performed more quickly by new Nokia users than by new Sony-Ericsson users. The subjective difficulty ranking also showed that first-time Nokia users found the new phone easier to use than first-time Sony-Ericsson users did. Hierarchic Task Analysis is used as a potential explanation, and three other theories that relate to these findings are presented: mental models, habit errors, and emotional attachment.

Nyckelord: user Interfaces, evaluation/methodology, interaction styles (e.g., commands, menus, forms, direct manipulation) , user-centred design, Measurement, Design, Experimentation, Human Factors, Mobile phone UI, usability evaluation, usability problems

Denna post skapades 2007-05-21. Senast ändrad 2015-02-26.
CPL Pubid: 41942


Institutioner (Chalmers)

Institutionen för data- och informationsteknik, datavetenskap (GU) (GU)
Institutionen för tillämpad informationsteknologi (GU) (GU)
Institutionen för data- och informationsteknik, Datavetenskap, Interaction Design Collegium (Chalmers) (2005-2007)


Informatik och systemvetenskap
Övrig informationsteknik

Chalmers infrastruktur