Abstract
When we interact with other people or avatars, they often provide an alternative spatial frame of reference compared to our own. Previous studies introduced avatars into stimulus–response compatibility tasks and demonstrated compatibility effects as if the participant was viewing the task from the avatar’s point of view. However, the origin of this effect of perspective taking remained unclear. To distinguish changes in stimulus coding from changes in response coding, caused by the avatar, two experiments were conducted that combined a SNARC task and a spontaneous visual perspective taking task to specify the role of response coding. We observed compatibility effects that were based on the avatar’s perspective rather than the participants’ own. Because number magnitude was independent of the avatar’s perspective, the observed changes in compatibility caused by different perspectives indicate changes in response coding. These changes in response coding are only significant when they are accompanied by visual action effects.
Highlights
In many everyday situations, we experience conflicting visual perspectives
Since spatial correspondence generally leads to stimulus–response compatibility, the influence of spatial stimulus–response compatibility effects for perspective taking should be discussed (May & Wendt, 2013)
Post hoc t tests for repeated measures revealed that the sagittal compatibility effect was significant with an avatar on the right, t(31) = − 2.08, p = 0.046, while it was non-significant with an avatar on the left t(31) = − 0.39, p = 0.702
Summary
For example, sitting at the dinner table and asking a person sitting opposite you to pass you the hot sauce Is it to their right or to their left? The most common tasks ask participants to perform spatial judgments from another person’s point of view, for example by asking them to judge whether an object is on a person’s left or right by pressing the corresponding key on a keyboard. These tasks generally do not include trials in which the participants have to perform spatially non-corresponding responses from another viewpoint, i.e., indicating the side where the object is not. Since spatial correspondence generally leads to stimulus–response compatibility, the influence of spatial stimulus–response compatibility effects for perspective taking should be discussed (May & Wendt, 2013)
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