LAboratoire de Psychologie
Sociale et COgnitive

L'étude de la cognition depuis ses bases cérébrales jusqu'à sa régulation sous l'influence de l'environnement social

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Merlhiot, G., Mermillod, M., Le Pennec, J.L., Hidalgo, S., & Mondillon, L. (in press). Reducing uncertainty to promote appropriate choices when facing difficult decisions at an Active Volcano. Journal of Applied Social Psychology.
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Accueil > Séminaires

02/03/2017 – Samuel MARTIN

par Guillaume VALLET - publié le , mis à jour le

Modelling influence and opinion evolution in online collective behaviour


Date : 02 mars 2016
Heure : 10h30 - 12h00
Lieu : Amphithéâtre Paul Collomp

Résumé de la conférence

Opinion evolution and judgment revision are mediated through social influence. In this talk, I will present a study based on a crowdsourced in vitro experiment. The study shows how a consensus model can be used to predict opinion evolution in online collective behaviour. The model is parametrized by the influenceability of each individuals, a factor representing to what extent individuals incorporate external judgments. Judgment revision includes unpredictable variations which limit the potential for prediction. The study also serves to measure this level of unpredictability via a specific control experiment. More than two thirds of the prediction errors are found to occur due to unpredictability of the human judgment revision process rather than to model imperfection.


Dr. Samuel MARTIN
Université de Lorraine
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