Abstract: To explore the influences of ramstam people on opinion dynamics, a modified cellular automaton model is proposed to simulate opinion propagation and evolution by introducing an obstinate strength parameter to represent the preferential original attitude habits of people. The influences of ramstam strength, ramstam people’s occupancy and system size are investigated via numerical simulation. Furthermore, the typical space-time patterns are also discussed in detail. The simulation results show that only the larger ramstam strength and the initial-state approval rate have an important effect on the final-state approval rate and the evolution results of the system, respectively. The larger occupancy for ramstam people is, the smaller the region of two-phase coexistence and the easier to achieve common attitude for people will be. In addition, the final state of the system is completely independent of the system size.

Key words: opinion propagation, cellular automata, obstinate strength