The Effectiveness of a Video Intervention According to Distress Levels - Differences in Psychophysiological Indicators -

This study is to examine if the populations with different distress levels can gain different psychological stabilization benefits from the video intervention. The study randomly assigned 21 university students to two intervention arms(Only and Mix) and psychophysiological indicators were measured before and after video stimuli. Then, psychophysiological responses were analyzed to verify if there are any significant changes in the key variables. The analysis discovered that the negative affect decreased in the high-distress population of the Only and Mix arms and state anxiety dropped after the Mix intervention. However, the low-distress populations in both arms did not show significant changes in affect. In the high-distress population of the Only arm, gamma waves at the left prefrontal, right frontal and temporal lobe increased, while right prefrontal gamma waves decreased. The high-distress subjects of the Mix arm showed an increase in beta waves at the left prefrontal, while the right frontal theta waves decreased. In conclusion, it was verified that the video interventions can boost cognitive processing regardless of the distress level, and the video invention can be effective in regulating the negative affect in the high-distress population.