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Type: Journal article
Title: Close interpersonal proximity modulates visuomotor processing of object affordances in shared, social space
Author: Saccone, E.J.
Szpak, A.
Churches, O.
Nicholls, M.E.R.
Citation: Attention, Perception and Psychophysics, 2018; 80(1):54-68
Publisher: Springer US
Issue Date: 2018
ISSN: 1943-3921
Statement of
Elizabeth J. Saccone, Ancret Szpak, Owen Churches, Michael E. R. Nicholls
Abstract: Research suggests that the human brain codes manipulable objects as possibilities for action, or affordances, particularly objects close to the body. Near-body space is not only a zone for body-environment interaction but also is socially relevant, as we are driven to preserve our near-body, personal space from others. The current, novel study investigated how close proximity of a stranger modulates visuomotor processing of object affordances in shared, social space. Participants performed a behavioural object recognition task both alone and with a human confederate. All object images were in participants' reachable space but appeared relatively closer to the participant or the confederate. Results revealed when participants were alone, objects in both locations produced an affordance congruency effect but when the confederate was present, only objects nearer the participant elicited the effect. Findings suggest space is divided between strangers to preserve independent near-body space boundaries, and in turn this process influences motor coding for stimuli within that social space. To demonstrate that this visuomotor modulation represents a social phenomenon, rather than a general, attentional effect, two subsequent experiments employed nonhuman joint conditions. Neither a small, Japanese, waving cat statue (Experiment 2) nor a metronome (Experiment 3) modulated the affordance effect as in Experiment 1. These findings suggest a truly social explanation of the key interaction from Experiment 1. This study represents an important step toward understanding object affordance processing in real-world, social contexts and has implications broadly across fields of social action and cognition, and body space representation.
Keywords: Personal space; Interpersonal proximity; Object affordance; Social space; Social cognition; Peripersonal space
Description: Published online: 1 September 2017
Rights: © The Psychonomic Society, Inc. 2017
DOI: 10.3758/s13414-017-1413-7
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