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Worry is a generalized psychological phenomenon seen among most people. When worry is excessive and nearly uncontrollable, people usually suffer psychological pain. The Penn State Worry Questionnaire for Children (PSWQ-C) was developed to measure worry objectively. It comprises 14 items for measuring excessive, generalized, and uncontrollable worry in children. This study, conducted with a large group of elementary children (3rd through 6th graders, ages 8-12 yr; N=973), investigated the reliability and validity of the Korean version of the Penn State Worry Questionnaire for Children (PSWQ-CK). The PSWQ-CK showed high reliability by test-retest and also excellent internal consistency results. To examine the validity of the PSWQ-CK, we calculated its correlation with the Revised Children's Manifest Anxiety Scale (RCMAS). The PSWQ-CK had a higher correlation with the worry/oversensitivity factor than with other subscales of the RCMAS, and it showed no correlation with the lie factor. When 3 reversed PSWQ-CK items were eliminated, the instrument showed higher internal consistency. However, this did not improve its correlation with other anxiety-measuring tools. In conclusion, the PSWQ-CK's reliability and validity were satisfactory, and it is a useful tool for objectively measuring the worry of Korean children of this age group.

Reliability and Validity of the Korean Version of the Penn State Worry Questionnaire in Primary School Children