This study investigated the influence of school-aged children’s self-control and impulsivity on peer attachment and
peer-related stress. The participants were 517 school-aged children from Daegu and Gyeongbok provinces and
completed questionnaires measuring child self-control, impulsivity, peer attachment and peer-related stress. The collected
data were analyzed with SPSS 19.0 and AMOS 8.0. The results were as follows. (1) School-aged children's self-control
positively influenced on peer attachment and negatively influenced on peer-related stress. The explanation power of
children's self-control was rather higher on peer attachment than on peer-related stress. On the other hand,
school-aged children's impulsivity positively influenced on peer-related stress. (2) School-aged children's peer attachment
was explained only by children's self-control, not by children's impulsivity. However school-aged children's peer- related
stress was explained both by children's self-control and children's impulsivity. Self-control was found to have more
power than impulsivity in explaining children's peer-related stress.