DOI: 10.5061/dryad.n6853
title: Data from: Group choices seemingly at odds with individual preferences

description: 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.
description: 01-USETracker
 InformationGives the zone the
 cockroach was throughout the trial: zone 255 = outside the shelters, zone
 94 = Vanillin-scented shelter, and zone 222 = Control
 shelter.01.csv02Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.03Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.04Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.05Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.06Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.07Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.08Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.09Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.10Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.11Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.12Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.13Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.14Gives the zone the cockroach was throughout the trial: zone 255 = outside the shelters, zone 94 = Vanillin-scented shelter, and zone 222 = Control shelter.Cumul_presence GroupsFor the group trials: tables showing the number of individuals within each shelter, as well as the cumulative number sheltered.