Rapid and rich prototyping

Usability testing with prototypes is typically conducted with a concurrent think-aloud protocol. Due to the simultaneous process of prototype operation and verbalization, participants of the think-aloud testing sometimes say very little and are likely to become silent when they are required to think abstractly or complete complex tasks. In this paper, we propose a method of user operation with oral instruction, which facilitates thinking aloud because oral operation would help participants to keep a continuous flow of verbalization. To investigate the quantity and quality of utterances made during think aloud protocols, we conducted a comparative study between oral and conventional manual operation methods. The study was carried out with two test objects: an interactive prototype of a touch-screen digital camera and photo album software with standard mouse/keyboard user interface. Our results demonstrated that the oral operation method was more effective in drawing more utterances for explanation and observation that would be an important source of discovering usability problems although the effect was dependent on the user interface of test objects.

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Designing wearable devices for the factory: Rapid contextual experience prototyping

Osswald

Weiss

Tscheligi

2013

2013 International Conference on Collaboration Technologies and Systems (CTS)

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Research in Wearable Computing recently gained momentum in industrial settings. We report on the process of rapid experience prototyping for the factory context, in specific the cleanroom of a semiconductor factory, to analyse user experience issues with wearable devices. The cleanroom context poses specific design requirements, which challenge the development of wearable prototypes. Small errors can have a huge effect on the overall production cycle. We argue that wearable devices can address and support aspects such as safety and task compliance and thus support zero-defect production. As basis for the rapid contextual experience prototyping, we used the LilyPad Arduino and designed two different devices. By means of substitution task evaluation, we gained insights in experiencing wearable devices regarding information awareness, the interpretability of messages coming from the interface, and users' acceptance.

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Rapid and rich prototyping

Cited by 5 publications

References 11 publications

Subjective Evaluation of Prototypes and Task Complexities for Mobile Phone Usability

Subjective Evaluation of Prototypes and Task Complexities for Mobile Phone Usability

Investigation of Indirect Oral Operation Method for Think Aloud Usability Testing

Designing wearable devices for the factory: Rapid contextual experience prototyping

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