Abstract: User’s emotional experience in the design of interaction is related to the success of the design,
the study of user’s emotion has been the research focus in the interaction design. People with mobile
terminals produces emotion in the process of interactive behavior. Because of the emotion of
subjectivity, it is difficult to measure objectively. This paper proposes a method predicting the emotion
with eyes’ movement indices, choosing Chinese PAD emotional scales as the tool of emotional
measurement, by partial least squares regression analysis to establish the eyes’ movement indices and
PAD the emotional value of multivariate linear regression model, then carry on the experiment design,
whether the the mapping function relation can accurately predict the emotion, the experimental results
proved that the relational expression can accurately forecast emotion.

Key words: eye movement index, emotional forecast, interactive behavior, partial least squares