Article Dans Une Revue Advances in Complex Systems (ACS) Année : 2019

THE DARK SIDE OF GOSSIPS: HINTS FROM A SIMPLE OPINION DYNAMICS MODEL

Résumé

We consider a simple model of agents modifying their opinion about themselves and about the others during random pair interactions. Two unexpected patterns emerge: (1) without gossips, starting from zero, agents' opinions tend to grow and stabilize on average at a positive value; (2) when introducing gossips, this pattern is inverted; the opinions tend to decrease and stabilize on average at a negative value. We show that these patterns can be explained by the relative in°uence of a positive bias on self-opinions and of a negative bias on opinions about others. Without gossips, the positive bias on self-opinions dominates, leading to a positive average opinion. Gossips increase the negative bias about others, which can dominate the positive bias on self-opinions, leading to a negative average opinion.

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hal-02959885 , version 1 (08-10-2020)

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Guillaume Deffuant, Ilaria Bertazzi, Sylvie Huet. THE DARK SIDE OF GOSSIPS: HINTS FROM A SIMPLE OPINION DYNAMICS MODEL. Advances in Complex Systems (ACS), 2019, 21 (06n07), pp.1850021. ⟨10.1142/S0219525918500212⟩. ⟨hal-02959885⟩
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