a study investigated the effectiveness of a new Exposure-Based Cognitive Therapy as treatment for depression. The researchers tested whether a new Exposure-Based Cognitive Therapy (EBCT) would enhance treatment gains compared to standard cognitive-behavioural therapy (CBT).

After treatment, the mean depression score for the CBT group was 11.0 (SD = 5.5 ), and for the EBCT group was 12.9 (SD = 6.5). The mean difference of -1.9 was (? )according to a Student t-test (t(198) = -2.27, p = .02), and the 95% confidence interval of [-3.6, -0.3] indicated that there may be (? )between groups in the population. The effect size was (?) (Cohen's d = -0.32 )

Fill in the blanks with ?

sample answer :

After treatment, the mean depression score for the CBT group was 36.2 (SD = 11.8 ), and for the EBCT was 36.6 (SD = 9.0). The mean difference of -0.4 was not statistically significant according to a Student t-test (t(141) = -0.24, p = .81), and the 95% confidence interval of [-3.9, 3.0] indicated that there may be no difference between groups in the population. The effect size was negligible (Cohen's d = -0.04 )