Impact of memory on opinion dynamics
Arkadiusz J\k{e}drzejewski, Katarzyna Sznajd-Weron

TL;DR
This paper models opinion dynamics considering memory and social temperature, revealing a phase transition between homogeneous and heterogeneous societal states, with implications for understanding opinion formation and social influence.
Contribution
It introduces a novel agent-based opinion model incorporating memory and social temperature, highlighting a phase transition affecting societal heterogeneity and opinion consensus.
Findings
Below critical temperature, society becomes heterogeneous with permanent conformists and independents.
Above critical temperature, agents behave randomly with equal probability of conformity or independence.
In individualistic societies, public opinion varies non-monotonically with social temperature.
Abstract
We investigate an agent-based model of opinion dynamics with two types of social response: conformity and independence. Conformity is introduced to the model analogously as in the Sznajd model or -voter model, which means that only unanimous group exerts peer pressure on individuals. The novelty, in relation to previous versions of the -voter model, is memory possessed by each agent and external noise , which plays the role of social temperature. Each agent has its own memories of past experiences related to the social costs and benefits of being independent or conformist. If an agent was awarded in past more for being independent, it will have a greater tendency to be independent than conformist and vice versa. We will show that depending on the social temperature the system spontaneously organizes into one of two regimes. Below a certain critical social temperature ,…
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