Natural gaze behavior during human-computer interaction provides
valuable information about user’s cognitive processes and intentions.
Including it as an additional input modality therefore provides great potential
to improve human-computer interaction. However, the relations between
natural gaze behavior and underlying cognitive processes still is unexplored
to a large extend. In this paper we identify and characterize major factors
influencing natural gaze behavior during human-computer interaction with a
focus on the role of user’s mental model about the interactive system. In a
user study we investigate how natural gaze behavior can be influenced by interaction
design and point out implications for usage of gaze as additional
modality in gaze-based interfaces.