Abstract
This study aimed to discover the effect of supportive group therapy to reduce public speaking anxiety on adolescents. The subjects in this study were five female adolescents of 17- to 19-year-olds. The study method used was an experimental study with the one-group pretest-posttest design using the purposive sampling technique. The study instrument used was the scale produced by Israwanda [9] based on Rogers’ [13] theory with public speaking anxiety aspects, i.e., physical responses, emotions, and mental processes. The non-parametric analysis test was using the Wilcoxon analysis technique to discover the differences between the pretest-posttest. The analysis result obtained was 0.043, which is <0.05. It shows a reduction of public speaking anxiety in adolescents. It is concluded that supportive group therapy implementation can reduce public speaking anxiety in adolescents
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