Meta-Analyses of Psychotherapy Studies Indicated That

Meta-analyses of psychotherapy studies indicated that:

A) symptom reduction was as high in the absence of any treatment as it was for any form of psychotherapy.
B) different forms of psychotherapy seemed to differ little in effectiveness.
C) psychotherapy clients showed,on average,10 to 15 percent more improvement than did control cases.
D) different forms of psychotherapy seemed to differ significantly in effectiveness.