Media Delivery Method Shows No Effect On Physiological Stress Response Factors of Heart Rate, Blood Pressure and Respiration
Journal of Advanced Student Sciences (JASS)
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Blood pressure, heart rate and respiration rate were measured to investigate the stress response induced by an emotionally stimulating video regarding the Islamic State of Iraq and Syria (ISIS). After control experiments were conducted on an initial set of subjects, test subjects were exposed to one of three treatment videos: audio only, visual only with subtitles, or both audio and visual with subtitles. The hypothesis being tested was that watching an emotionally evocative video featuring current terror tactics by ISIS with both audio and video will increase participants’ heart rate, blood pressure, and respiration rates more significantly compared to either watching the video with subtitles only or listening with audio only. It was hypothesized that the audio-only stimuli would also increase heart rate, blood pressure, and respiration rates but not to the extent of the combined auditory and visual stimuli. Based on the longer processing time for visual stimuli it was predicted that the visual-only stimuli would cause the smallest increases in heart rate, blood pressure and respiration rate. Statistical data analysis revealed that no treatment was more effective than another. In summary, individuals encounter different types of media formats that could potentially differ in their mental and physical effects. However, according to this study, varying media formats do not have significantly different effects on an individual’s physiological response.