University of Twente Student Theses
A Pilot Study Exploring the Effect of Handover at Different Levels of Difficulty on Trust, Workload, Anxiety, and Sleepiness, Measured with a Conversational Agent
Haagsma, B. (2023) A Pilot Study Exploring the Effect of Handover at Different Levels of Difficulty on Trust, Workload, Anxiety, and Sleepiness, Measured with a Conversational Agent.
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| Abstract: | The current pilot study proposed a model to investigate the relationship between Take-Over Request (TOR) difficulty and success rate, concurrently assessing the influence of trust, mental workload, state anxiety, and sleepiness. As autonomous vehicles become more widely available, insights into autonomous vehicle take-overs could help guide safety measures. The main predictions of the current study were that TOR difficulty negatively affects its success, moderated by the driver’s trust in the AV. Using a driving simulator and VR headset the participants completed six scenarios, each consisting of three take-over events. Each event was followed by verbal evaluations by a male researcher acting as a conversational agent, while each complete scenario was followed by a questionnaire. Findings suggest a strong fit of the theoretical model and analyses support the collection of verbal evaluations after each event rather than measuring only the final event or using a questionnaire. Results suggest that handover time and trust in the AV increases sleepiness, mental workload negatively affects TOR success, and that sleepiness correlates with mental workload and state anxiety. Contrary to existing literature however, lower handover time increased driver trust towards the AV. Given the small sample size the results should be taken with caution. |
| Item Type: | Essay (Bachelor) |
| Faculty: | BMS: Behavioural, Management and Social Sciences |
| Subject: | 77 psychology |
| Programme: | Psychology BSc (56604) |
| Link to this item: | https://purl.utwente.nl/essays/95639 |
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