Suppose you wanted to test the effects of a college writing ...

[Pea0909berry]

Suppose you wanted to test the effects of a college writing program on success in other classes. The experimental group consisted of freshmen who had enrolled in the writing class; the control group consisted of freshmen who had not enrolled in the writing class. Subsequent performance of both groups in a writing-intensive history class was measured. A potential confound in this study is:
 
  a. maturation.
  b. testing.
  c. selection.
  d. mortality.

Question 2

If in the course of an experiment you repeat measurements of the same individual, you introduce a confound called:
 
  a. maturation.
  b. history.
  c. selection.
  d. testing.

[Bison]

Answer to Question 1

C

Answer to Question 2

D