2011 年 13 巻 1 号 p. 67-72
In this paper, we collected 28 communication notebooks from four cafes and a noodle shop, and observed the existence of features, such as date, signature, illustration, and so on, for each post of each notebook. By analyzing the observed data by aggregate results and statistically significant test, we found that (1) more than half of posts didn't include mentions to others, (2) the series of features were not observed in random; the same feature tended to appear in series. This result shows that the emergence of implicit norm governs communication-styles in communication notebooks.