Explain the Matched-Pairs Design

Multiple Choice

Explain the Matched-Pairs Design
-A medical journal published the results of an experiment on depression. The experiment investigated the effects of a controversial new therapy for depression. Researchers measured the depression levels of 52 adult women who suffer moderate conditions of the disorder. After the therapy, the researchers again measured the women s depression levels. The differences between the the pre- and post-therapy depression levels were reported. Identify the experimental units.

A) the 52 adult women who suffer from depression
B) the differences between the pre- and post-therapy depression levels
C) the disorder (depression or no depression)
D) the therapy time period (pre or post)