Dr Ellis Performs an Experiment to Test the Hypothesis That

question 12

Multiple Choice

Dr. Ellis performs an experiment to test the hypothesis that alcohol consumption increases verbal aggression. However, the alcohol group contained mostly men, whereas the no-alcohol group contained mostly women. In this experiment, gender is a(n ) _________ variable.

• A)spurious
• B)confounding
• C)predictor
• D)independent

---

Definitions:

Ventricular Systole

The phase of the cardiac cycle in which the ventricles contract, pumping blood out of the heart into the arterial system.

Ventricular Diastole

Dilation of the heart ventricles.

ECG

Electrocardiogram, a test that measures the electrical activity of the heart over a period of time.

Cardiac Cycle

refers to the sequence of events that occur in the heart during one beat, including the contraction (systole) and relaxation (diastole) periods.