Limits...
Giving a helping hand: effects of joint attention on mental rotation of body parts.

Böckler A, Knoblich G, Sebanz N - Exp Brain Res (2011)

Bottom Line: Research on joint attention has addressed both the effects of gaze following and the ability to share representations.Results revealed a significant flattening of the performance rotation curve when participants attended jointly (experiment 1).Thus, attending to objects together from opposite perspectives makes people adopt an allocentric rather than the default egocentric reference frame.

View Article: PubMed Central - PubMed

Affiliation: Donders Institute for Brain, Cognition, & Behaviour, Centre for Cognition, Radboud University, P.O. Box 9104, 6500 HE Nijmegen, The Netherlands. A.Bockler@donders.ru.nl

ABSTRACT
Research on joint attention has addressed both the effects of gaze following and the ability to share representations. It is largely unknown, however, whether sharing attention also affects the perceptual processing of jointly attended objects. This study tested whether attending to stimuli with another person from opposite perspectives induces a tendency to adopt an allocentric rather than an egocentric reference frame. Pairs of participants performed a handedness task while individually or jointly attending to rotated hand stimuli from opposite sides. Results revealed a significant flattening of the performance rotation curve when participants attended jointly (experiment 1). The effect of joint attention was robust to manipulations of social interaction (cooperation versus competition, experiment 2), but was modulated by the extent to which an allocentric reference frame was primed (experiment 3). Thus, attending to objects together from opposite perspectives makes people adopt an allocentric rather than the default egocentric reference frame.

Show MeSH
Upper graph Schematic illustration of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a first-person perspective (leftmost picture). Lower graph Schematic drawing of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a third-person perspective (leftmost picture)
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3102195&req=5

Fig5: Upper graph Schematic illustration of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a first-person perspective (leftmost picture). Lower graph Schematic drawing of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a third-person perspective (leftmost picture)

Mentions: To keep the task as similar as possible to the two previous experiments, we manipulated the perspective of the initial hand picture in a given trial (first person vs. third person; see Fig. 5) and studied how this affected performance on subsequent trials. The underlying logic of manipulating the orientation of the initial picture on a trial and studying the effect on a subsequent trial is as follows. If the initial hand picture were always seen from one’s own perspective, there would be no reference to the other’s perspective at all. In contrast, if the initial hand picture were always seen from the other’s perspective, there would be a strong emphasis on the difference in perspectives. Thus, varying the orientation of the initial hand picture in the preceding trial is an effective way of manipulating the reference to the other’s perspective and of priming an allocentric reference frame.Fig. 5


Giving a helping hand: effects of joint attention on mental rotation of body parts.

Böckler A, Knoblich G, Sebanz N - Exp Brain Res (2011)

Upper graph Schematic illustration of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a first-person perspective (leftmost picture). Lower graph Schematic drawing of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a third-person perspective (leftmost picture)
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3102195&req=5

Fig5: Upper graph Schematic illustration of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a first-person perspective (leftmost picture). Lower graph Schematic drawing of two subsequent trials where participants saw the first stimulus of the pair in the preceding trial from a third-person perspective (leftmost picture)
Mentions: To keep the task as similar as possible to the two previous experiments, we manipulated the perspective of the initial hand picture in a given trial (first person vs. third person; see Fig. 5) and studied how this affected performance on subsequent trials. The underlying logic of manipulating the orientation of the initial picture on a trial and studying the effect on a subsequent trial is as follows. If the initial hand picture were always seen from one’s own perspective, there would be no reference to the other’s perspective at all. In contrast, if the initial hand picture were always seen from the other’s perspective, there would be a strong emphasis on the difference in perspectives. Thus, varying the orientation of the initial hand picture in the preceding trial is an effective way of manipulating the reference to the other’s perspective and of priming an allocentric reference frame.Fig. 5

Bottom Line: Research on joint attention has addressed both the effects of gaze following and the ability to share representations.Results revealed a significant flattening of the performance rotation curve when participants attended jointly (experiment 1).Thus, attending to objects together from opposite perspectives makes people adopt an allocentric rather than the default egocentric reference frame.

View Article: PubMed Central - PubMed

Affiliation: Donders Institute for Brain, Cognition, & Behaviour, Centre for Cognition, Radboud University, P.O. Box 9104, 6500 HE Nijmegen, The Netherlands. A.Bockler@donders.ru.nl

ABSTRACT
Research on joint attention has addressed both the effects of gaze following and the ability to share representations. It is largely unknown, however, whether sharing attention also affects the perceptual processing of jointly attended objects. This study tested whether attending to stimuli with another person from opposite perspectives induces a tendency to adopt an allocentric rather than an egocentric reference frame. Pairs of participants performed a handedness task while individually or jointly attending to rotated hand stimuli from opposite sides. Results revealed a significant flattening of the performance rotation curve when participants attended jointly (experiment 1). The effect of joint attention was robust to manipulations of social interaction (cooperation versus competition, experiment 2), but was modulated by the extent to which an allocentric reference frame was primed (experiment 3). Thus, attending to objects together from opposite perspectives makes people adopt an allocentric rather than the default egocentric reference frame.

Show MeSH