This study aims to examine the effect of child-centered group play therapy on the improvement of
withdrawn preschool children’s daily stress, anxiety, peer interaction and EEG variation. The
research subjects are 12 children of 3-5 years of age who are over 65T in the social-withdrawal
scale of KPRC(Korean Personality Rating Scale for Children). They were recommended by class
teachers due to the withdrawal behavior at D kindergarten in Seoul. The experimental group received
12 sessions of the child-centered group play therapy program, twice a week for 35 minutes. But the
control group did not receive any of the child-centered group play therapy program. To verify the
effects of the program, a Mann-Whitney-U test of the non-parametric was preceded and
homogeneity between the two groups was verified. Also, a Wilcoxon’s signed-rank test was
conducted to check on the pre-to-post changes of daily stress, anxiety, peer-interaction and EEG
variation by using SPSS 18.0. The results of this research showed that the child-centered group play
therapy program decreases daily stress and anxiety, while it increases positive peer-interaction and
the EQ of withdrawal children. The result of this study serves as a baseline data about the effects
of child-centered group play therapy for withdrawal children with emotional difficulties.