We investigated whether different features in the face image are gazed at while making impression judgments in different personality traits. Pairs of synthesized face images, both of which were generated by averaging the faces of different age groups, were sequentially presented at normalized positions. For each pair of faces, subjects decided which one was more extreme with respect to either of the traits in question (i.e., seniority and sociability), while their eye movements were measured by a rapid eye-movement measurement system. The eye-movement results were represented in 2D histograms to indicate the spatial distribution of the cumulative duration of the gaze at each fixation point; positions corresponding to the mode of each histogram were analyzed by ANOVA. The results suggest that attention is drawn to different features in impression judgments.