Wikipedia
A Usability lab is an social environmentenvironment where user (computing)users are studied interactioninteracting with a system for the sake of evaluating the system's usability.Typically, the user sits in front of a personal computer, alongside a facilitator who gives the user tasks to perform. Behind a mirrorone-way mirror, a number of observers watch the interaction, make notes, and ensure the activity is sound recordingrecorded. Usually, sessions will be filmed and the software will data logginglog interaction details.comp-sci-stub