The persona effect: affective impact of animated pedagogical agents
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
The effects of animated characters on anxiety, task performance, and evaluations of user interfaces
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
An avatar-based help system for web-portals
HCII'11 Proceedings of the 14th international conference on Human-computer interaction: interaction techniques and environments - Volume Part II
Bases of human-computer trust and explanations
CHI '13 Extended Abstracts on Human Factors in Computing Systems
The impact of explanation dialogues on human-computer trust
HCI'13 Proceedings of the 15th international conference on Human-Computer Interaction: users and contexts of use - Volume Part III
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In this paper we present a novel help system that integrates material provided by various contributors into a single point of reference for user assistance. Therefore different kinds of resources are organized by means of collaborative tagging. To retrieve the content natural language is used to communicate with an avatar on a web page. The advantage of our approach has been verified by user testing. First-time users assisted by our system were able to perform a given task more efficiently than those performing the same task employing a system based on traditional help texts.