Dr Foster is studying whether a change in oxygen levels delivered to patients with anxiety disorder can increase the likelihood of experiencing panic-attack-like symptoms. 'Oxygen levels' is:

Question

Quizplus · Accepted Answer

The independent variable is the factor that is manipulated by the researcher, which in this case is the change in oxygen levels. The dependent variable is the outcome that is measured, which would be the likelihood of experiencing panic-attack-like symptoms. Pre-test and post-test are not relevant in this scenario.

Dr Foster Is Studying Whether a Change in Oxygen Levels