T-test was performed to examine the difference found using mixed ANOVA. It might be concluded that there was significant difference between the average scores during posttest and follow up of experiment and control groups (t = 5979, p < 0.001; t = 5345, p < 0.001). In the experiment group, there was significant difference between the average scores during pretest and posttest (t = −4949, p < 0.05) and during pretest and follow up (t = −4657; p < 0.05). The fact that there was no significant difference between the average scores during posttest and follow up in the experiment group showed that participants’ score improvement could be maintained up until one week after psychoeducation program. Meanwhile in the control group there was no significant difference between the average scores gained during pretest, posttest, and follow up.