This study was conducted as a case study on art therapy for the relief of defiance and anger in a high
school girl with process trauma. The participant of this study was a senior high school girl who had
suffered abusive language, corporal punishments, threats, etc. from her parents since her childhood. Art
therapy was conducted during the period from August 13 to December 31 in 2015, 60-minute sessions once
a week, for a total of 22 sessions. The effects of the therapy were tested using the defiance scale, anger
scale, kinetic family drawing, tree-drawing test, and verbatim, and the participant’s changes in each session
were observed. The results of this study showed that art therapy was found to have a positive effect on
the process trauma high school girl’s defiance relief. Second, the art therapy was found to have a positive
effect on the process-trauma high school girl’s anger relief. In addition, it was concluded that the lack of
structure of the program, the characteristics of the art materials, and therapeutic features were the factors
leading to these results. Future research needs to diversify the participants’ gender, age, etc., and to
approach Studio art therapy so that the clients may be immersed in the creative processes.