Over the past few years we have been develo** an expressive embodied conversational
agent system. In particular, we have developed a model of multimodal behaviours that …

The field of intelligent virtual agents (IVAs) has evolved immensely over the past 15 years,
introducing new application opportunities in areas such as training, health care, and virtual …

Virtual agents are systems that add a social dimension to computing, often featuring not only
natural language input but also an embodiment or avatar. This allows them to take on a …

The term “believability” is often used to describe expectations concerning virtual agents. In
this paper, we analyze which factors influence the believability of the agent acting as the …

This study introduces emotional feedback as a construct in an acceptance model. It explores
the effect of emotional feedback on behavioral intention to use Computer Based Assessment …

The exploration of how we react to the world and interact with it and each other remains one
of the greatest scientific challenges. Latest research trends in cognitive sciences argue that …

Empathetic behavior has been suggested to be one effective way for Embodied
Conversational Agents (ECAs) to provide feedback to learners' emotions. An issue that has …

When used as an interface in the context of Ambient Assisted Living (AAL), a social robot
should not just provide a task-oriented support. It should also try to establish a social …

There is a fundamental problem with the Turing Test (Turing, 1950). It is designed to help
decide whether a machine has genuine intelligence comparable to that of a human, and …

This article describes an emotional adaption approach to proactively trigger increased
helpfulness towards a robot in task-related human-robot interaction (HRI). Based on social …