Plagiarism CONSTRUCT VALIDITY AND RELIABILITY OF AN ADOLESCENT'S COPING STRATEGY INSTRUMENT

The study aims to determine the validity and reliability of the Coping Strategy instrument for assessing adolescents’ stress coping strategies. A total of 100 11th grade students in three Muhammadiyah senior high schools in Yogyakarta were involved, recruited using stratified sampling technique. The Coping Strategy instrument proposed in this study consisted of 9 items with seven alternative answers. The items were arranged following Coping Strategy aspects, namely problem- focused coping and emotion-focused coping. The collected data were then analyzed using the Smart PLS 3.28 program using the Second Order Confirmatory Factor Analysis. The analysis result showed that the aspects and indicators employed in the proposed construct were valid and reliable. The most dominant aspect in reflecting on Coping Strategy is problem-focused coping. The results of the study indicates that the development of the Coping Strategy instrument in adolescents in this study is acceptable as the applied theory is consistent with empirical data obtained from the participants. The result of this study can be used by school counselors to explore adolescents’ coping strategies