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A Usability lab is a place where Usability testing is done. It is an environment where users are studied interacting with a system for the sake of evaluating the system's usability. Depending on the kind of system that is evaluated, the user sits in front of a personal computer or stands in front of the systems interface, alongside a facilitator who gives the user tasks to perform. Behind a one-way mirror, a number of observers watch the interaction, make notes, and ensure the activity is recorded. Very often the testing and the observing room are not placed alongside. In this case the video and audio observation are transmitted through a (wireless) network and broadcast via a video monitor or video beamer and loudspeakers. Usually, sessions will be filmed and the software will log interaction details. ==Benefits of Usability Testing== Usability labs help optimize UI designs, work flows, understanding the voice of the customers, and understanding what customers really do.〔Kaushik〕 Through in-lab sessions at a specified location, designers, stakeholders and anyone else involved in the project, are observing the process of how a customer interacts with the current prototype. To understand user needs, engineers must observe people while they are actually using computer systems and collect data from on system usability. In-lab usability testing usually have small and specific sample sizes to better obtain qualitative data on the product. The participants cooperate with engineers to understand how the user interacts the system being tested through on-hands testing.〔Good, Michael〕 “Through this process, developers are able to identify issues with the product. To aid fixing any problems, observers pay strict attention to: * Learn if participants are able to complete specified tasks successfully * Identify how long it takes to complete specified tasks * Find out how satisfied participants are with your Web site or other product * Identify changes required to improve user performance and satisfaction * Analyze the performance to see if it meets your usability objectives “ 〔Usability〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Usability lab」の詳細全文を読む スポンサード リンク
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