Measuring Presence in Virtual Environments

A primary argument for the efficacy of Virtual Environments VE applications is that the user is present in the simulated environment. Presence is defined as the subjective experience of being in one environment there when physically in another environment here. Presence may be based on external factors and internal tendencies that support both awareness of the current situation and the transition from the immediate physical location here to a remote or artificial environment there. These factors are labeled as immersive because they may lead to the experience of presence. Some major immersive factors identified in current literature or hypothesized as contributing to presence are briefly reviewed in this report. These concepts and ideas have been used as the basis for two questionnaires. An Immersive Tendencies Questionnaire ITQ was developed to investigate possible correlates that may indicate an individuals tendency to experience more or less presence in artificial environments. The Presence Questionnaire PQ addresses different factors or features peculiar to the artificial environment that may affect the experience of presence, or the capability to immerse oneself, in that environment. The results of administration of these questionnaires, in conjunction with an experiment on the performance of basic tasks in VE, are presented. These results should be considered preliminary and interpreted with caution because of the small number of subjects involved. Analyses indicate reasonable reliability values for the ITQ and PQ. Presence, Simulation, Immersion, Simulator sickness, Virtual environments