Meta-Analysis of Brief Psychodynamic Therapy Outcome Studies Indicated That

Meta-analysis of brief psychodynamic therapy outcome studies indicated that:

A) different forms of psychotherapy seemed to differ little in effectiveness.
B) symptom reduction was as high in the absence of any treatment as it was for any form of psychotherapy.
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.