Which of the following could be an independent variable in an experimental study? (Select all that apply.)
a. Quality of life
b. The percentage of moisture in the inspired air the subject breathes
c. The researcher's preference for quantitative versus qualitative methodologies
d. Wearing a hat with a large brim
e. Seizure activity during the experiment
ANS: B, D
An independent variable is a stimulus or activity that is manipulated or varied by the researcher to create an effect on the dependent variable. The independent variable is also called an intervention, treatment, or experimental variable. A dependent variable is the response behavior, or outcome that the researcher wants to predict or explain.
You might also like to view...
Because the client was not incorporating the behavior changes the nurse suggested, the nurse decided to no longer visit the client's home to give care. Which of the following events would allow the client to successfully sue the nurse?
a. The nurse did not tell the client that no further visits would be made and did not suggest other options for care. b. The nurse supervisor agreed that the suggested changes for the client's care were unreasonable. c. The jury believed that the client was always right, regardless of the improperness of the client's behavior. d. The physician sided with the client against the nurse and stated that the nursing plan of care was unreasonable.
A nurse notes that there is a large amount of sanguineous drainage on a patient's dressing. There are no physician orders for a dressing change, so the nurse will
1. Circle the drainage on the dressing and record the time of assessment. 2. Continue to monitor the dressing. 3. Carefully clean around the wound. 4. Reinforce the dressing with additional dressings.
The patient should receive the Glucophage® ________ meals. 
Fill in the blank(s) with the appropriate word(s).
A client in halo traction says to the nurse, "I can't get used to this contraption. I can't see properly on the side, and I keep misjudging where everything is." Which response by the nurse is therapeutic?
A. "No one ever gets used to that thing! It's horrible." B. "If I were you, I'd have had the surgery rather than suffer like this." C. "Halo traction involves many difficult adjustments. Practice scanning with your eyes after standing up, before you move." D. "Why do you feel like this when you could have died of a broken neck? This is the way it will be for several months. You need to accept it, don't you think?"