Abstract
The purpose of this study is to compare the effects of single versus multiple metaphors in computer expert and novice users' change of mental models as well as information search performance. Related issues, such as mental models, differences between novice and expert users, and effects of single versus multiple metaphors will be reviewed first in this paper, followed by the discussions of methodology and expected results. The research findings will suggest useful guidelines in designing metaphorical interfaces in the area of human-computer interaction.