title: Action-space coding in social contexts.
abstract: In two behavioural experiments we tested whether performing a spatial task along with another agent changes space representation by rendering some reference frames more/less salient than others. To this end, we used a Simon task in which stimuli were presented in four horizontal locations thus allowing for spatial coding according to multiple frames of reference. In Experiment 1 participants performed a go/no-go Simon task along another agent, each being in charge of one response. In Experiment 2 they performed a two-choice Simon task along another agent, each being in charge of two responses. Results showed that when participants were in charge of only one response, stimulus position was coded only with reference to the centre of the screen hence suggesting that the co-actor's response, or the position of the co-actor, was represented and used as a reference for spatial coding. Differently, when participants were in charge of two responses, no effect of the social context emerged and spatial coding relied on multiple frames of reference, similarly to when the Simon task is performed individually. These findings provide insights on the influence played by the interaction between the social context (i.e. the presence of others) and task features on individual performance.
authors.affiliation: Department of Communication and Economics, University of Modena and Reggio Emilia, Viale Allegri, 9, 42121 Reggio Emilia, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Ciardo
authors.affiliation: Department of Philosophy and Communication, University of Bologna, via A. Gardino 23, 40122, Bologna, Italy.
authors.forename: Luisa
authors.initials: L
authors.lastname: Lugli
authors.affiliation: Department of Philosophy and Communication, University of Bologna, via A. Gardino 23, 40122, Bologna, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Nicoletti
authors.affiliation: Department of Communication and Economics, University of Modena and Reggio Emilia, Viale Allegri, 9, 42121 Reggio Emilia, Italy.
authors.forename: Sandro
authors.initials: S
authors.lastname: Rubichi
authors.affiliation: Department of Communication and Economics, University of Modena and Reggio Emilia, Viale Allegri, 9, 42121 Reggio Emilia, Italy.
authors.forename: Cristina
authors.initials: C
authors.lastname: Iani
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance; D011930:Reaction Time; D012919:Social Behavior; D013037:Spatial Behavior; D055815:Young Adult