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Effects of an Instructional Video on the Quality of Voice Use in Professional Presentations

Amende, Rebecca (2024) Effects of an Instructional Video on the Quality of Voice Use in Professional Presentations.

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Abstract:The business community recognises the importance of presentation skills and believes they should be better trained. Presentation skills include verbal and non-verbal communication, with the voice as the main tool. This study examined voice use in presentations, analysing variables such as intonation, speed, volume, pauses, and filler words. A quasi-experimental design with a pretest and posttest was employed, involving twenty technically educated participants divided into two groups, with one group receiving an intervention between presentations. The presentations were recorded in virtual reality and assessed by both the participants themselves and by an expert. After statistical analyses, including Repeated Measures ANOVA and t-tests, the intervention was found to have almost significant effects on the use of pauses (self-assessment) and volume (expert assessment). The use of filler words improved significantly over time according to both assessments. The expert rated six variables higher than the participants themselves, except for intonation. The correlation between self- and expert assessment was minimal. The study, distinguished by its focus on voice use and innovative use of VR and a specially designed rubric, found discrepancies between self-assessment and expert assessment, emphasising the potential benefits of targeted training and feedback for improving presentation skills.
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:81 education, teaching
Programme:Educational Science and Technology MSc (60023)
Link to this item:https://purl.utwente.nl/essays/100649
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