Author Question: Researchers pilot test independent variables to a. see whether they affect the dependent variable ... (Read 38 times)

sjones · **on:** Jun 20, 2018

Researchers pilot test independent variables to

a. see whether they affect the dependent variable
b. eliminate error variance
c. look for confounds
d. determine whether participants can detect differences in the levels
e. allow confederates to practice their roles

Question 2

In a study of the effects of exercise on cardiovascular fitness, a sport psychologist randomly assigned participants to one of four groups.

Participants engaged in aerobic exercise for either 0, 15, 30, or 60 minutes three days a week for three months. Which of the following statements is true about this study?
a. there is no control group
b. participants in the control group did not exercise
c. there are four independent variables
d. the dependent variable has four levels
e. this is not an experiment