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Remote Usability Testing

Menghini Calderon Fabrizio Antonio
Expert Author
Published: 2006-04-03

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The diffusion of screen sharing software and remote control applications is slowly changing how usability evaluations are conducted because usability experts can now interact with users geographically distant and with different cultural backgrounds.

Moreover Internet and fast broadband connections strengthen the ability to deploy high quality videos and makes user observation more accurate for usability evaluators. With this premise we can define remote usability testing as a technique that exploits the user (home or office!), transforming it into a usability laboratory where user observation can be done with screen sharing applications.

Conducting a remote usability test is not so different from taking a classical usability evaluation, but there are some facts that have to be considered prior to beginning the session regarding:

* Participants recruiting

* Environment setup

* Test execution

Participants recruiting

Participants to remote usability testing can be recruited through any channel used for normal usability testing, but surely the cheapest and fastest method is using online questionnaires. The online screening in fact, permits the selection of users based on detailed criteria such as job title, annual revenues and geographic location. An important remark to consider in the recruiting phase is to ask participants about information regarding their internet connection and also about their knowledge of screen sharing and remote control applications.

Normally, this phase can take three or four days to complete if the questionnaire had to be prepared from scratch, but it is a good habit to reuse old screening questions adapting them to the current situation thus reducing effort to only one day.

Environment setup

Remote control software has to be prepared both for the usability expert and for participants. While setting up the application for the usability expert can be quite simple, installing and configuring the software for the users can be more difficult if they haven't any knowledge or experience for this kind of program. During recruiting it is also a good idea to send to participant a little document explaining in a simple way how to configure their computer and how to set up the application for the usability session.

Another solution is using collaborative or conferencing services like WebEx that permits meeting with anyone, anywhere in real time over the web. Cost for this service has to be taken into consideration if budget for usability tests is limited.

Test execution

Conducting a remote usability test is not so different to conducting a usability session in a laboratory. Dialog with a participant is performed through the phone or even using chat and messenger applications, if in this way users can feel more confortable or misunderstandings can be avoided if working with participants in foreign countries. User interaction can be viewed in the facilitator monitor thanks to the use of screen sharing capabilities peculiar of this kind of software. In all cases user interaction has to be recorded for future reference and analysis.

Some studies (for example Remote Testing versus Lab Testing) have revealed that the number of key usability findings was higher using remote usability testing rather than usability laboratory testing.

Benefits and limitations

The obvious and greatest advantage of this methodology is that remote usability testing makes accessible to usability experts a large pool of participants geographically and culturally heterogeneous. Additionally this technique:

* reduces usability testing costs because all travel expenses both for usability experts and for participants are eliminated;

* makes usability tests more real because they are conducted in a familiar environment for the user and avoid in such manner all anxiety led by the facilitator next to them and by observers sitting outside;

* permits a strategic participant recruiting because hard to reach users can be hired without excessive effort;

* increases the parallelism of usability tests because two or more usability experts can conduct the same test in the same time with different participants;

* reduces time needed to perform usability evaluation because recruiting, environment setup and test execution can be done with less effort;

These advantages make remote usability testing more appealing than traditional usability evaluation, but there are some disadvantages that have to be considered before choosing between one of those two techniques. In fact, in comparison with classic methods, remote usability testing:

* can bring security and performance issues due to the nature of remote connections. Bandwidth and guaranteed uptime are key factors for this methodology;

* has a limited visual feedback because usability experts cannot take into consideration nonverbal cues and reactions;

* makes it more difficult to build relationships and trust with facilitators;

* can be difficult to use for participants. In fact screen sharing tools and remote control software need to be set up prior to the session and users can encounter problems getting the tool to work correctly. Moreover the facilitator can find problems trying to troubleshoot software behavior;

Choosing the right technique

Remote usability testing is ideal for:

* web applications;

* intranets;

* e-commerce web sites;

* informational web sites;

* projects with a low budget for usability testing

Usability testing conducted in a laboratory is suitable for:

* resources that cannot be reached online (cruise controls, cars dashboards, ...);

* web sites depending on particular devices (accessibility devices, handheld, ...);

* highly secure client/server application;

* projects where physical user observation is needed;

* long test sessions

Source: Remote usability testing

More details: Interno Tredici

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About the Author:
Menghini Calderon Fabrizio Antonio is an IT engineer that actually works in a web agency located in Rome, Italy, where is responsible of usability, human factors and information architecture and also is in charge of developing web sites and web applications using CSS, XHTML and PHP.

To find more about Fabrizio visit Interno Tredici.

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