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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 18: Social Systems, Opinion and Group Dynamics I

SOE 18.2: Vortrag

Donnerstag, 30. März 2023, 15:45–16:00, ZEU 260

Heider balance observed for multidimensional attributes — Joanna Linczuk¹, Piotr J Górski¹, Boleslaw K Szymanski^2,3, and •Janusz A Hołyst¹ — ¹Faculty of Physics, Warsaw University of Technology, Warsaw, Poland — ²Social Cognitive Networks Academic Research Center, Rensselaer Polytechnic Institute, Troy, USA — ³Społeczna Akademia Nauk, Łódź, Poland

The majority of measured and studied social interactions arise from dyadic relations. An exception is the Heider Balance Theory (HBT) that postulates the existence of a social triad dynamics. Most of the past literature on HBT focuses on opinions about a single topic in such triads. In contrast, we study opinions of university students on a multidimensional set of topics. We discover limits of HBT observability by considering a novel agent-based model that accounts for: (i) multiple topics on opinions of individual students, (ii) influence of such opinions on dyadic relations (social link polarization), and (iii) influence of triadic relations on individual's sets of opinions on all topics. Using longitudinal records of university student behavior, we create a coevolving social network on which we introduce models of student interactions. We validate the model by showing that the triadic influence is empirically measurable for static and dynamic observables in this network. However, when we consider opinions on each topic separately from the others, the influence of triadic interactions is indistinguishable from the noise.