Changes in social relation networks and leader-follower behavior in emergency evacuations
LI Lihua1,2, MA Yaping1, DING Ning3, ZHANG Hui1, MA Yefeng1
1. Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
2. Counter-Terrorism College, People's Public Security University of China, Beijing 100038, China;
3. Criminal Investigation College, People's Public Security University of China, Beijing 100038, China
Abstract：Group dynamics theory shows that social relationships are an important factor influencing group behavior. The characteristics and changes in social relationships during emergencies were studied in experiments modeling 6 high-rise building emergency evacuations. The evacuees are all from a graduate class with 30 students where are some pre-existing social relations such as friends, girl and boy friends, and roommates. Social network analyses, questionnaires and video data showed that the leader-follower behavior during emergencies may be influenced by the normal social relationships, but that the center of the evacuee group, the group cohesion, and subgroups showed obvious changes. A mutual believed degree (MBD) was defined to identify the opinion leaders in normal situations and in emergencies which shows that the potential leaders in emergencies are most likely from the normal opinion leaders and from the men who run faster in evacuations.
李丽华, 马亚萍, 丁宁, 张辉, 马晔风. 应急疏散中社会关系网络与“领导-追随”行为变化[J]. 清华大学学报（自然科学版）, 2016, 56(3): 334-340.
LI Lihua, MA Yaping, DING Ning, ZHANG Hui, MA Yefeng. Changes in social relation networks and leader-follower behavior in emergency evacuations. Journal of Tsinghua University(Science and Technology), 2016, 56(3): 334-340.
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