Research

The collective dynamics underlying personal and social information integration

Understanding how individuals integrate personal and social information

Research Unit: 1

Project Number: 26

Example Behavior:
Collective Intelligence

Disciplines:
Behavioral Biology
Psychology

 

Principal Investigators:
Pawel Romanczuk
Ralf Kurvers
Ralph Hertwig

Postdoctoral Researchers:
Alan Novaes Tump

 

Expected Project Duration
2020 - 2024


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The collective dynamics underlying personal and social information integration

Understanding how individuals integrate personal and social information

AI-generated at SCIoI with prompt "train station people"

Individuals rarely make decisions in social isolation. In most situations, individuals are subject to social influence. Social influence may be beneficial (e.g., increase decision quality), but it can also be detrimental (e.g., when false information cascades occur). To understand the emergence of collective intelligence—the shared intelligence that emerges from collaborative, collective efforts of individuals—we need to comprehend how individuals integrate personal and social information. A key aspect that has been largely neglected in human collective intelligence research is the dynamic aspect of information exchange. Most studies on human collective decision making assume that individuals simultaneously make decisions, which are then statically exchanged. In reality, however, information exchange is highly dynamic, and the timing of information exchange is linked to (subjective) information quality. Few studies have embraced such an approach; consequently, the dynamics of information flow in human groups remain poorly understood. To fill this important gap, this proposal has four objectives. First, we will investigate how single individuals integrate personal and social information under controlled conditions (objective 1). Next, we will parameterize a dynamic decision making model to predict information flow and collective dynamics in real-time interacting human groups, and test these predictions (objective 2). We then further parameterize our model to derive predictions for information flow across different network structures, and test these predictions (objective 3). Finally, we will bring all these issues together, studying the conditions underlying collective intelligence in collective systems (objective 4). The analytical system consists of human groups conducting experimental choice tasks. The synthetic component consists of drift diffusion models that address the cognitive processes underlying information integration. We continuously close the loop between analytical and synthetic systems, by using both approaches in concert. As end product, we will develop a versatile set of open-source algorithms (in CRAN R/Python) that can be used to study information integration processes in collectives, as well as for programming robotic swarms to achieve collective intelligence in the face of key challenges, such as speed-accuracy trade-offs or optimization at the individual versus collective level. Prior to release, the performance of these algorithms will be extensively tested with genetic algorithms.


Tump, A. N., Pleskac, T. J., & Kurvers, R. H. J. M. (2020). Wise or mad crowds? The cognitive mechanisms underlying information cascades. Science Advances, 6(29), eabb0266. https://doi.org/10.1126/sciadv.abb0266
Tump, A., Pleskac, T., Romanczuk, P., & Kurvers, R. (2022). How the cognitive mechanisms underlying fast choices influence information spread and response bias amplification in groups. Proceedings of the 44th Annual Conference of the Cognitive Science Society, 44, 658–664. https://escholarship.org/uc/item/5m540872#main
Tump, A. N., Wollny-Hutarsch, D., Molleman, L., & Kurvers, R. H. (2023). Evidence accumulation from social information: Earlier social information has a stronger influence on individuals’ judgments. PsyArXiv. https://doi.org/10.31234/osf.io/shje5
Tump, A. N., Wollny-Hutarsch, D., Molleman, L., & Kurvers, R. H. (2024). Earlier social information has a stronger influence on judgments. Scientific Reports. https://doi.org/10.1038/s41598-023-50345-4
Tump, A. N., Wolf, M., Romanczuk, P., & Kurvers, R. (2022). Avoiding costly mistakes in groups: The evolution of error management in collective decision making. PLOS Computational Biology. https://doi.org/10.1371/journal.pcbi.1010442
Sultan, M., Tump, A. N., Geers, M., Lorenz-Spreen, P., Herzog, S. M., & Kurvers, R. H. J. M. (2022). Time Pressure Reduces Misinformation Discrimination Ability But Does Not Alter Response Bias. Scientific Reports. https://doi.org/10.1038/s41598-022-26209-8
Kurvers, R. H. J. M., Herzog, S. M., Hertwig, R., Krause, J., & Wolf, M. (2021). Pooling decisions decreases variation in response bias and accuracy. IScience, 24(7), 102740. https://doi.org/10.1016/j.isci.2021.102740
Kurvers, R. H. J. M., Herzog, S. M., Hertwig, R., Krause, J., Moussaid, M., Argenziano, G., Zalaudek, I., Carney, P. A., & Wolf, M. (2019). How to detect high-performing individuals and groups: Decision similarity predicts accuracy. Science Advances, 5(11), eaaw9011. https://doi.org/10.1126/sciadv.aaw9011
Kurvers, R. H., Nuzzolese, A. G., Russo, A., Barabucci, G., Herzog, S. M., & Trianni, V. (2023). Automating hybrid collective intelligence in open-ended medical diagnostics. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2221473120

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