Two Independent Groups the Most Serious Dilemma Posed by Waiting-List

Multiple Choice

Two Independent Groups The most serious dilemma posed by waiting-list control conditions in medical and psychotherapy research is that

A) waiting-list controls deny treatment to patients who need it.
B) waiting-list controls lack the credibility of conventional treatments.
C) waiting-list controls possess low external validity.
D) waiting-list controls suffer from high subject mortality.