Which of the Following Is True

Which of the following is true?

A) Methodological limitations, such as small sample size, have rarely if ever been an issue in studies comparing treatments.
B) The so-called verbal therapies are correctly categorized together as they share much in common.
C) The manner by which a researcher chooses to categorize therapies does not appear to affect the conclusions drawn from a study comparing those therapies.
D) Using meta-analytic approaches, a number of investigators are now finding significant differences between treatments.
E) Kazdin and Bass (1989) found that most studies that found no differences between treatments had a large enough sample size to draw solid conclusions.