July 29, 2016 14:10 - 15:40

Walking blindfolded unveils unique contributions of behavioural approach and inhibition to lateral spatial bias

[Speaker] Weick, Mario:1
[Co-author] Allen, John A:1, Vasiljevic, Milica:2, Yao, Bo:3
1:University of Kent (United Kingdom), 2:University of Cambridge (United Kingdom), 3:University of Manchester (United Kingdom)

The present research examined the joint and independent contributions of two fundamental motivational systems - behavioural approach and inhibition systems (BAS and BIS) - to lateral spatial bias in a locomotion task. Participants completed self-report measures of trait BAS and BIS, then repeatedly traversed a room, blindfolded, aiming for a straight line. We obtained locomotion data from motion tracking to capture variations in the walking trajectories. Overall, walking trajectories deviated to the left, and this tendency was more pronounced with increasing BIS scores. Meanwhile, BAS was associated with relative rightward tendencies when BIS was low, but not when BIS was high. These results demonstrate for the first time an association between BIS and lateral spatial bias independently of variations in BAS. The findings also contribute to clarify the circumstances in which BAS is associated with a rightward bias.
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