231 The Professional Counselor | Volume 13, Issue 3 comparison groups. Notably, the post hoc test revealed that total negative affectivity was statistically significantly higher in the comparison group (M = 65.90, SD = 34.11) compared to the treatment group (M = 33.80, SD = 21.38), a mean difference of 32.10. The final research question tested the hypothesis that students in the treatment group who received the CBT-P group intervention would show an increase in social–emotional well-being compared to students in the comparison group. ANCOVA results revealed no statistically significant differences [F(1, 37) = .007, p = .94; ηp 2 of .00, no effect] between the treatment and comparison groups scores from pretest to posttest. Table 4 Treatment and Comparison Group Means, Standard Deviations, and Change Scores for the Study Variables Measure Condition (n) Pretest M(SD) Posttest M(SD) M +/− DASS-21 Treatment (20) 42.80 (25.50) 33.80 (21.38) −9.00 Comparison (20) 55.40 (30.12) 65.90 (34.11) +10.50 SEHS-S Treatment (20) 102.80 (17.34) 105.80 (16.19) +3.00 Comparison (20) 103.70 (15.45) 106.65 (13.76) +2.95 CAPS SOP Treatment (20) 47.45 (7.88) 39.15 (5.78) −8.30 Comparison (21) 47.30 (7.83) 43.20 (6.50) −4.10 SPP Treatment (20) 31.75 (9.27) 29.40 (5.78) −2.35 Comparison (21) 31.25 (8.47) 29.85 (7.93) −1.40 Note. DASS-21 = Depression Anxiety Stress Scale; SEHS-S = Social Emotional Health Survey Secondary; CAPS = Child Adolescent Perfectionism Scale; SOP = Self-Oriented Perfectionism Subscale; SPP = Socially Prescribed Perfectionism Subscale; n = number, M = mean; SD = standard deviation; +/− = mean change score. Discussion Findings from this study were consistent with previous studies that demonstrated the successful impact of CBT-P group therapy on perfectionism, anxiety, stress, and depression (Handley et al., 2015; Steele et al., 2013). This study also addressed Egan and colleagues’ (2014) recommendation to investigate the effects of CBT-P within other mental health settings by exploring the effects within an early
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