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Title: Situational determinants of hand-proximity effects
Authors: Thomas, Tony
Sunny M.M.
Published in: Collabra: Psychology
Abstract: Recent studies have demonstrated altered visual processing of stimuli in the proximal region of the hand. It has been challenging to characterize the range and nature of these processing differences. In our attempt to deconstruct the factors giving rise to the Hand-Proximity Effects (HPEs), we manipulated the organization of items in a visual search display. In two experiments, we observed the absence of HPE. Specifically, in Experiment 1, we presented the search display in only one half of the monitor (split diagonally), which could be either near or far from the hand placed on the corner of the monitor. The results of a Bayesian analysis showed that the search efficiency was not significantly different for neither ‘near’ nor ‘far’ condition when compared with the baseline condition in which the hand rested on the lap. In Experiment 2, the search display was arranged horizontally across the monitor. A Bayesian analysis showed that RTs did not vary depending on the proximity of the target to the hand as well as the baseline (lap) condition. The present results characterize features of the HPE that have not been reported previously and are in line with recent reports of the failure to replicate HPE under various circumstances. © 2019 The Author(s).
Citation: Collabra: Psychology, 5(1)
Issue Date: 2019
Publisher: University of California Press
Keywords: Altered vision near hands
Attentional disengagement
Spatial prioritization
Visual search
ISSN: 24747394
Author Scopus IDs: 57193094447
Author Affiliations: Thomas, T., Centre for Cognitive Science, Indian Institute of Technology Gandhinagar, Gandhinagar, India
Sunny, M.M., Centre for Cognitive Science, Indian Institute of Technology Gandhinagar, Gandhinagar, India
Funding Details: The current research was supported by a PhD Research Fellowship from the University Grants Commission and IIT Gandhinagar to Tony Thomas. University Grants Commission, UGC
Corresponding Author: Thomas, T.; Centre for Cognitive Science, India; email:
Appears in Collections:Journal Publications [HS]

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