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The System of Dynamic Model of Intra-group Emotion Intensity
Author(s): 
Pages: 1223-1229
Year: Issue:  5
Journal: Psychological Science

Keyword:  Mass-Emergencyinter-group emotionintra-group emotion intensitysystem of dynamic;
Abstract: Mass-Emergency(ME), especially negative ME as a kind of sociological phenomenon, has attracted the attentions of many researchers in sociology, crisis management and psychology. The evolution of ME closely connects with inter-group emotional intensity. However, previous research has paid little attention to measure intra-group emotion intensity, let alone the evolution of its mechanism. As a result, people know little about how intra-group emotion intensity varies with time. There is no way to monitor its variation trend, which is bad for ME-prevention. Most former research has focused on the micro perspective of emotional intensity or on individual emotional intensity when inter-group emotion is transmitted, not on the intra-group emotional intensity of the whole group. Thus, their results have a lot of limitations, and always poorly fit the reality. In order to improve the ecological validity of the model that describes the transformation law of intra-group emotion intensity, this study adopted 3 kinds of methods, including mathematical modeling, computer simulation, and psychological empirical research. In one aspect, mathematical modeling and computer simulation contribute to the revealing of how the law of intra-group emotion intensity changes with time(system of dynamic law). Firstly, the present study defined an inter-group-psychological variable which described the emotional intensity of the whole group when intergroup emotion was transmitted. And at the same time, a model was built to describe and explore the dynamic mechanism of intra-group emotional intensity which consisted of spreaders. The sense of group identity was taken into account and the model included several parameters: Ta(t) indicated the rate of emotion intensity that was above a(a=1,2,3,4,5), 1 the lowest, 5 the highest. Ea indicated the lowest sense of identity level of emotion intensity "a". ω indicated the unknown parameter. ω1and ω2 indicated rate of spreader at any point in time.Secondly, this study tested the basic hypothesis and ecological validity of the model. In four experiment conditions: inter-group positive emotion, inner-group negative emotion, out-group positive emotion and out-group negative emotion. The experiment was conducted in a computer lab. Participants were recruited from 20 classes with 686 college students; 3 participants of each class were randomly selected. MP3 material was used to trigger emotions and was presented to the 3 participants. After the presentation, they chose to transmit the MP3 to other participants or not, and then reported back their choices to experimenter. Meanwhile, they also reported their emotion intensity on paper after hearing that MP3 material. Lastly, the intra-group emotion intensity of every time point was calculated and the result was compared to computer simulation data. Results showed that(1) The model of this study fit the empirical data, which means that the model had good ecological validity. The system of dynamic mechanism of intra-group emotion intensity could be described by spreaders and group identifications.(2) During the emotion transmission, both the portion of spreaders and inter-group emotion intensity first rose and then descended as time went by. But this study found that compared to the climax time of the spreader, intra-group emotion intensity was delayed.
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