The purpose of this study is to analyze and clarify the mechanism of the majority of other's influence in social media. The majority of others who don't actively participate by posting in social media sites may express their attitudes and influence by Liking and Sharing contents. This study applies social influence research, especially social impact theory, to discuss the social influence of the majority of others. Based on the review, the paper finds that the impact of social influence becomes more complex when the majority of others exists in social media, compared with an ordinary website. The paper contributes to revealing the mechanism of the majority of others, by discussing the reasons why existing researches show different results.

The purpose of this study was to develop a Student Leadership Behavior Scale related to leadership education based on experiential learning in university and to examine the reliability and validity of the scale. Leadership education based on experiential learning is conducted based on the theory of experiential learning. A 54-item scale was created utilizing previous research and preliminary survey data. The study involved 156 students (Time 1) and 110 students (Time 2) from University A to conduct leadership education on a large scale in Japan. Factor analysis results revealed that leadership behavior consisted of six factors: taking initiative and modeling the way, challenging the process, sharing goals, managing goals and tasks, task-oriented support, and people-oriented support. Items were carefully selected to create a final scale that consisted of 30 items. As a result of examining the reliability and validity of the developed scale, positive values were obtained overall.