• Science of Emotion and Sensibility
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• v.7 no.2
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• pp.187-194
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• 2004

This study is to investigate whether or not the aroma treatment has a positive impact on the reduction of anxiety of the school children when presenting a speech. Participants were 70 school children(20 males and 15 females for the control group, and 21 male and 14 females in the experimental group). They were exposed to 4 different scents i.e., lavender barreme, lemon, orange sweet, chamomile roman that were vaporized through humidifiers. Pre and post self-report type of SAS done by the children and SBES done by teachers were done before and one and two weeks after the treatment. The result indicated that children with aroma treatment than children who had no treatment showed a significant decrease in speech anxiety and improvement in behavior during speech.

• Science of Emotion and Sensibility
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• v.7 no.4
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• pp.43-49
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• 2004

This study investigated the effect of listening to music on the reduction of public speech anxiety among middle-school female students. The subjects were 66 female first graders, 33 of the experimental and another 33 of the control group selected from two classes of C middle school in Chonan city. The level of anxiety (SAS) was rated by the subjects through self-report and the speech behavior (SBES) of the subjects were evaluated by a teacher before, a week after and two weeks after the speech trials. 64 pieces of music were selected based on the music therapy-related references. After 23 out of 64 pieces were selected for the preliminary experiment and 7 pieces as having positive effects through evaluating those 23 pieces in the other class in the same gaders were finally selected. Subjects listened to music for 40 min two times a day for two weeks with a cassette player in the classroom. The result yielded the followings: 1) Self-reported public speech anxiety decreased both in the experimental and control groups. However, there found more decrease in the music-listening group than in the non-listening music group. 2) The public speech behavior improved both in the experimental and control groups with on difference between the two groups. This suggests a possibility that SBES may not be a accurate measure to evaluate the speech anxiety. We conclude that two-week listening to music has the effect reduction on speech anxiety.

• The Korean Journal of Financial Management
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• v.7 no.1
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• pp.1-20
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• 1990

In most of studies on market efficiency, the stability of risk measures and the normality of residuals unexplained by the pricing model are presumed. This paper re-examines stock splits, taking the possible violation of two assumptions into accounts. The results does not change the previous studies. But, the size of excess returns during the 2-week period before announcements decreases by 43%. The results also support that betas change around announcements and the serial autocorrelation of residuals is caused by events. Based on the results, the existing excess returns are most likely explained as a compensation to old shareholders for unwanted risk increases in their portfolio, or by uses of incorrect betas in testing models. In addition, the model suggested in the paper provides a measure for the speed of adjustment of the market to the new information arrival and the intensity of information contents.

• Journal of the Korea Convergence Society
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• v.13 no.1
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• pp.1-12
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• 2022

In this study, the effect of VR exposure programs integrated with web-based cognitive restructuring education on reducing social anxiety was confirmed. The experimental group (n=12) received a 10~15 minute session of web-based cognitive intervention and a 20-minute session of virtual reality exposure therapy. The comparison group (n=15) received a 10~15 minute session of web-based speech education and a 20-minute session of virtual reality exposure therapy. After 4 weeks, the experimental group had an increase in positive interpretation bias, a decrease in negative interpretation bias, and a decreased level of social anxiety. These results suggest that the combination of self-help form of web-based cognitive intervention in the treatment of social anxiety disorder can improve the therapeutic effect of VRET.

• Journal of Music and Human Behavior
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• v.4 no.2
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• pp.1-17
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• 2007

Huge growth in developmental level, new accomplishment, and The period of adolescents is not only the transition stage but also improvement of academic level. In this level of stage, adolescents have difficulties in development, so they show psychological abnormality such as stress and depression. They could develop mental disorder such as depression or anxiety if they do not overcome the abnormality. According to the situation of the insufficiency of the decent program for adolescents' mental health in the current society, we are strongly requested to develop the psycho-therapeutic program for them. Therefore, in this study, we examined the effect of the musical activities as blues music structure on the improvement of the Self-Efficacy in the female middle school students who have depressive tendencies as well as what they experienced through the activities. The 3 participants were selected out of 70 students in the first year at the "D" middle school in Seoul by being tested with Child Depression Inventory(CDI) and Self-Efficacy Scale(SES). The musical activities were built with 3 steps. Of which, the first one was the introduction to each other, the formation of rapport, and induction of their interests to the musical activities through blues. The second one was letting participants learn the blues music structure by practice and play assigned music(including improvisation) during later 5 sessions with different difficulties at each session. The third one was giving them opportunities to play a music out of the acquired ones during the session or creative music by their own, which results in maximizing musical activities and an acquired experience. As a result, first of all, the scores of CDI test of 3 participants in 10 time sessions showed slight changes, suggesting the negative correlation between CDI and SES even though changes were not big differences. Secondly, the scores of SES test of 3 subjects in 10 time sessions were all changed and especially preference for tasking was significant. Thirdly, the scores of SES for musical playing test of 3 participants in 10 time sessions were all changed and especially preference for musical tasking was significant shown. Finally, according to answers of 3 participants in 10 time sessions for the after questionnaire on musical activities, participants experienced affirmative self-confidence and positive emotion. Taken together, it was suggested that musical activities using blues music structure could be promising therapeutic intervention method.