Public Speaking and the relation with Psychological Perceived Stress & Physiological Stress by: Heart Rate Variability

Kooi, Ryan (2023) Public Speaking and the relation with Psychological Perceived Stress & Physiological Stress by: Heart Rate Variability. Bachelor thesis, Psychology.

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Abstract

In general people are stressed when they have to present. This study explores the relation between two forms of stress: physiological and psychological. For the first hypothesis we expect that high levels of perceived psychological stress covary with high physiological stress. Psychological stress was measured by emotional reactivity and physiological stress by heart rate variability (N = 27, mean age = 19.5). Within the experiment the TRIER social stress test induced stress. For our second hypothesis we added a manipulation to the TRIER- test to have two conditions for the audience. The audience was either supportive or non- supportive during the presentation. The hypothesis is that when presenting in front of a non- supportive audience, higher stress levels will be found. Lastly, we hypothesized that females tend to have a smaller heart rate variability, opposed to males. Physiological stress was operationalized by cRMSSD and measured by the Polarband H10. Psychological stress was measured by the emotion levels valence, arousal, and dominance from the Self-Assesment Manikin. We found a significant result for the relation between valence and cRMSSD in the non-supportive condition (p < .005). The rest of the results showed nonsignificant effects. Although nonsignificant, our results can be seen as trends that were consistent with relevant literature. Limitations are that the sample size small and homogenous, due to lacking variations in age, sex and the participants’ characteristics.

Item Type:	Thesis (Bachelor)
Supervisor name:	Span, M.M.
Degree programme:	Psychology
Differentiation route:	None [Bachelor Psychology]
Date Deposited:	24 Sep 2024 07:29
Last Modified:	24 Sep 2024 07:29
URI:	http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/4390

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