1-24 An Evaluation Technique for Risk-Taking Tendency using Characteristics of Human Steering Behavior

The objective of the study was to explore the possibility for using an evaluation technique for risk-taking tendency based on characteristics of human switching behavior of steering strategy. Individual Risk-taking Indices can be estimated by the Indices of Difficulty while the subjects switched the strategies from performing the Steering law tasks to the Fitts' law tasks. In this study, a PC-based experiment was conducted where the subjects performed a tube tracing trials in which we expected that switching behaviors were observed. With different tube length and width shown on the display, the trajectories of the mouse cursor were monitored throughout the trials. As a result of the experiment, such switching behaviors were observed from all five subjects. A consistent index over the trials was observed from one subject, whereas the indices obtained from the rest of four subjects showed inconsistent over the trials. Future study included refining the target presentation and the establishment of the protocols for the subjects performing the tasks in order to enhance the validity of the proposed index.