Previous studies have reported that the results of experiments on social attention differ in physical face-to-face and mediated face-to-face (e.g., real people vs. images of people). These results do not indicate only the difference between laboratory setting and daily life, but suggests that the control variables of social attention difficult to control in the laboratory might have a great influence on social attention in the daily living environment. In this paper, we outline the previous studies related to eye contact and face-to-face during dyadic conversation and introduces the experimental plan using wearable eye-tracker and device that measures face-to-face.