Most evidence for the effectiveness of self-help programs comes from:
A) carefully monitored longitudinal studies.
B) laboratory experimentation and generalization of findings.
C) cross-sectional surveys of self-help program participants.
D) testimonials from those who have gone through such a program.

Question

Quizplus · Accepted Answer

Most evidence for the effectiveness of self-help programs comes from testimonials from participants, as rigorous scientific studies on these programs are often lacking.

Most Evidence for the Effectiveness of Self-Help Programs Comes From