Dataset Information

Group choices seemingly at odds with individual preferences.

ABSTRACT: Numerous studies have focused on the influence of the social environment and the interactions between individuals on the collective decision-making of groups. They showed, for example, that attraction between individuals is at the origin of an amplification of individual preferences. These preferences may concern various environmental cues such as biomolecules that convey information about the environment such as vanillin, which, for some insects, is an attractant. In this study, we analysed how the social context of the cockroaches of the species Periplaneta americana modifies preferences when individuals are offered two shelters, of which one is vanillin scented. One of the principal results of our study is that isolated individuals stay longer and more frequently in a vanillin-scented shelter, while groups choose more frequently the unscented one. Moreover, the proportion of sheltered insects is larger when the group selects the unscented shelter. Our experimental results and theoretical model suggest that the individual preference is not inverted when insects are in a group but, rather, the response to vanillin decreases the attraction between individuals. As a result, aggregation is favoured in the unscented shelter, leading therefore to a collective inversion.

SUBMITTER: Laurent Salazar MO

PROVIDER: S-EPMC5541546 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Group choices seemingly at odds with individual preferences.

Laurent Salazar Michel-Olivier MO Nicolis Stamatios C SC Calvo Martín Mariano M Sempo Grégory G Deneubourg Jean-Louis JL Planas-Sitjà Isaac I

Royal Society open science 20170719 7

Numerous studies have focused on the influence of the social environment and the interactions between individuals on the collective decision-making of groups. They showed, for example, that attraction between individuals is at the origin of an amplification of individual preferences. These preferences may concern various environmental cues such as biomolecules that convey information about the environment such as vanillin, which, for some insects, is an attractant. In this study, we analysed how ...[more]

PMID: 28791151

Similar Datasets

Project description:BackgroundOsteoporosis guidelines recommend pharmacologic therapy based on 10-year risk of major osteoporotic fracture (MOF) and hip fracture, which may fail to account for patient-specific experiences and values.ObjectiveWe aimed to determine whether patient decisions to initiate osteoporosis medication agree with guideline-recommended intervention thresholds.Design and participantsThis prospective cohort study included women aged ? 45 with age-associated osteoporosis who attended a group osteoporosis self-management consultation at a tertiary osteoporosis center.InterventionA group osteoporosis self-management consultation, during which participants received osteoporosis education and then calculated1 their 10-year MOF and hip fracture risk using FRAX and2 their predicted absolute fracture risk with therapy (assuming 40% relative reduction). Participants then made autonomous decisions regarding treatment initiation.Main measuresWe evaluated agreement between treatment decisions and physician-set intervention thresholds (10-year MOF risk ? 20%, hip fracture risk ? 3%).Key resultsAmong 85 women (median [IQR] age 62 [58-67]), 27% accepted treatment (median [IQR] MOF risk, 15.1% [9.9-22.0]; hip fracture risk, 3.3% [1.3-5.3]), 46% declined (MOF risk, 9.5% [6.5-11.6]; hip fracture risk, 1.8% [0.6-2.3]), and 27% remained undecided (MOF risk, 14.0% [9.8-20.2]; hip fracture risk, 4.4% [1.7-4.9]). There was wide overlap in fracture risk between treatment acceptors and non-acceptors. Odds of accepting treatment were higher in women with prior fragility fracture (50% accepted; OR, 5.3; 95% CI, 1.9-15.2; p = 0.0015) and with hip fracture risk ? 3% (32% accepted; OR, 3.6; 95% CI, 1.4-9.2; p = 0.012), but not MOF risk ? 20% (47% accepted; OR, 3.0; 95% CI, 1.0-8.5; p = 0.105).ConclusionsInformed decisions to start osteoporosis treatment are highly personal and not easily predicted using fracture risk. Guideline-recommended intervention thresholds may not permit sufficient consideration of patient preferences.

Dataset Information

Group choices seemingly at odds with individual preferences.

Publications

Group choices seemingly at odds with individual preferences.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets