Analysis of Emotional Evolution Mechanism under Social Comparison

In view of the sympathy, harshness, respect and jealously between the strong and the weak in the context of social comparision, the mapping relationships between emotions and cooperationcompetition behavior were assumed. Based on prisoner's dilemma game, snowdrift game, deer hunting game and harmonious game, the replicated dynamic equation of emotional evolution was established,and the equilibrium point of the system evolution was calcuted. The stability of the equilibrium point and the evolution mechanism of the system under different parameters were studied. The evolutionary directions and stable strategies under the framework of different game model were given. The results show that possible evolutionary directions include sympathy towards a weaker and respect towards a stronger, sympathy towards a weaker and jealously towards a stronger, harshness towards a weaker and jealously towards a stronger, and harshness towards a weaker and respect towards a stronger. System noise has an impact on equilibrium point stability and individual expected income.