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- Title
Social Requests and Social Affordances: How They Affect the Kinematics of Motor Sequences during Interactions between Conspecifics.
- Authors
Ferri, Francesca; Campione, Giovanna Cristina; Volta, Riccardo Dalla; Gianelli, Claudia; Gentilucci, Maurizio
- Abstract
The present study aimed at determining whether and what factors affect the control of motor sequences related to interactions between conspecifics. Experiment 1 demonstrated that during interactions between conspecifics guided by the social intention of feeding, a social affordance was activated, which modified the kinematics of sequences constituted by reaching-grasping and placing. This was relative to the same sequence directed to an inanimate target. Experiments 2 and 4 suggested that the related-to-feeding social request emitted by the receiver (i.e. the request gesture of mouth opening) is prerequisite in order to activate a social affordance. Specifically, the two experiments showed that the social request to be fed activated a social affordance even when the sequences directed towards a conspecific were not finalized to feed. Experiment 3 showed that moving inside the peripersonal space of a conspecific, who did not produce any social request, marginally affected the sequence. Finally, experiments 5 and 6 indicated that the gaze of a conspecific is necessary to make a social request effective at activating a social affordance. Summing up, the results of the present study suggest that the control of motor sequences can be changed by the interaction between giver and receiver: the interaction is characterized by a social affordance that the giver activates on the basis of social requests produced by the receiver. The gaze of the receiver is a prerequisite to make a social request effective.
- Subjects
MOVEMENT sequences; PERCEPTUAL-motor processes; PSYCHOLOGY of movement; SENSORY perception; NONVERBAL communication; VISUAL perception; EXPERIMENTS; RECEIVERS (Commercial law); SIGN language
- Publication
PLoS ONE, 2011, Vol 6, Issue 1, p1
- ISSN
1932-6203
- Publication type
Article
- DOI
10.1371/journal.pone.0015855