What is one reason that there is little evidence supporting the effectiveness of Gestalt therapy and client-centred therapy?

Question

Quizplus · Accepted Answer

Many supporters of Gestalt therapy and client-centred therapy believe that their approach is difficult to measure through traditional experimental methods, as these therapies rely heavily on the relationship between the therapist and client, as well as the experiences and insights of the client. As a result, there has been limited research conducted on the effectiveness of these therapies. However, this does not necessarily mean that they are not effective, but rather that their effectiveness may not fit neatly into the traditional experimental design.

What Is One Reason That There Is Little Evidence Supporting