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Augmented Reality (AR) enriches a user's real environment by adding spatiallyaligned virtual objects (3D models, 2D textures, textual annotations, etc) bymeans of special display technologies. These are either worn on the body orplaced in the working environment. From a technical point of view, AR facesthree major challenges: (1) to generate a high quality rendering, (2) toprecisely register (in position and orientation) the virtual objects (VOs) withthe real environment, and (3) to do so in interactive real-time (Regenbrecht,Wagner, and Baratoff, 2002). The goal is to create the impression that the VOsare part of the real environment. Therefore, and similar to definitions ofvirtual reality (Steuer, 1992), it makes sense to define AR from apsychological point of view: Augmented Reality conveys the impression that VOsare present in the real environment. In order to evaluate how well this goal isreached, a psychological measurement of this type of presence is necessary. Inthe following, we will describe technological features of AR systems that makea special questionnaire version necessary, describe our approach to thequestionnaire development, and the data collection strategy. Finally we willpresent first results of the application of the questionnaire in a recent studywith 385 participants.

Measuring Presence in Augmented Reality Environments: Design and a First Test of a Questionnaire