VRate: A Unity3D Asset for integrating Subjective Assessment Questionnaires in Virtual Environments

Experience assessment is a key activity for understanding and developing interactive systems and technologies. Virtual reality (VR) is no exception, considering its rising popularity and the increasing availability of affordable VR devices. However, in experience studies where participants typical have to rate multiple test conditions presented to them, having to repeatedly take off the head mounted display (HMD) just for the purpose of issuing ratings is cumbersome and breaks the immersion. As a solution we present VRate, a Unity3D asset to integrate subjective experience questionnaires directly in virtual reality environments. The suitability of VRate has been proven by successfully using the asset in a QoE and a UX study. We describe the technical implementation and suggest how to integrate the VRate in a study setup. VRate will be provided to the scientific community for research purposes, educational and noncommercial usage under a Creative Commons License.