1. A comparative study of the effectiveness of Client Centred Psychotherapy when compared to the findings published in Stiles et al 2007. Simon Carver

4. The graph above shows Pre-post difference means and plus and minus one standard deviation, (representing about 68% of all outcomes). Means are represented by the mid dot point on the graph lines. The lines show the distribution of Pre-post difference within each treatment group,

5. Mean Pre-Post Difference for a Variety of Treatments Figure 11 shows that all therapies studied produce similar outcomes when measured using Pre-Post difference means and one standard deviation (+ or -) from the mean. CCT results show little variation from results in the original paper. Mean Pre-Post Difference for a Variety of Treatments

6. Treatment Group: Pre-Post Difference and Effect Size The graph above shows the difference between the pre-therapy CORE-OM score and the post-therapy score. This is calculated by Pre-therapy mean scores minus Post-therapy mean scores. The Effect Size is calculated, as the difference Pre-post therapy divided by the pooled Pre-therapy standard deviation.

7. Deterioration Percentages by Treatment Group Deterioration is an increase in CORE-OM score of 4.9 or more. This graph above show the percentage of patients that deteriorate from Assessment to the End of Therapy CORE- OM scores. All therapies have low percentage rates of deterioration. PDT has the highest percentage of deterioration in patients at 1.9%, CCT has the lowest percentage at 0.01%.

9. Implications: More evidence of equivalency between therapeutic approaches. CCT is a valid therapeutic modality This research adds weight to the evidence- base supporting the effectiveness of CCT.