Author Question: An experimenter was interested in comparing two kinds of marital therapy programs--one that involved ... (Read 65 times)

littleanan · **on:** Jun 20, 2018

An experimenter was interested in comparing two kinds of marital therapy programs--one that involved individual counseling and one that provided therapy for couples together. The experimenter also thought that therapy effectiveness might depend on the age of the couples, the number of years they had been married, and whether or not they had any children. Which of the variables in the study is not a subject variable?

a. type of therapy
b. age
c. years married
d. children

Question 2

Attributing causality to a subject variable is incorrect because:

a. assignment to groups was not random.
b. the subjects in each group may have different histories.
c. the logic of experimentation is weakened.
d. all of these