What is the effect of interface complexity on risk perception tasks

Most human computer interfaces impose a certain level of additional cognitive load to the user task. In this project we study the use of VR to evaluate the user competency for safe behavior in work environments. We propose an assessment of two interfaces with different levels of cognitive load for locomotion in a risk perception task. We describe user experiments with two similar groups of subjects, each using one of the interfaces. We identified important open questions on the design of this kind of interface.