The best outcome studies for evaluating the effectiveness of psychotherapy typically use

(1)The use of evidence-based treatment that is deemed appropriate for your particular issue.

(2) Important factor is the clinical expertise of the psychologist or therapist.

(3)Ones own characteristics, values, preferences, and culture.

Explanation:

Many people begin psychotherapy feeling like their problem will never be resolved; however, psychotherapy helps people see that they can do things to make their situation better.

They typically use randomized clinical trials.

Explanation:

Randomized clinical trials refer to studies which divide the participants into separate groups in order to compare different treatments. By dividing the participants, chances are they are similar and the experiment tends to be judged fairly since there is no much difference in the comparison.

This is the best way to evaluate the effectiveness of psychotherapy.