in an experiment to determine the usefulness of vitual realitty therapy in curing phobic disorders subjects are assigned to one of the two groups on that uss VR or on that does not use VR the group assigment is the studys

placebo variable
extraneaous variable
control variable
dependent variable
independent variable

in an experiment to determine the usefulness of virtual reality therapy in curing phobic disorders, the subjects are assigned to one of the two groups - one that uses VR and one that does not use VR. The group assignment is the independent variable.