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12-04-2019 | Original Article | Uitgave 6/2020

Psychological Research 6/2020

Embodied cognition in multitasking: increased hand-specific task shielding when stimuli are presented near the hand

Tijdschrift:
Psychological Research > Uitgave 6/2020
Auteurs:
Rico Fischer, Roman Liepelt
Belangrijke opmerkingen
Rico Fischer and Roman Liepelt contributed equally to this work.

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Abstract

The proximity of hand position alters the processing of visual stimuli. Stimuli presented close (proximal) to hands receive an enhanced allocation of visual attention compared to stimuli presented far (distal) from hands. In the present dual-task study we studied the consequences of this preferential processing when the stimulus for Task 1 (S1) and the stimulus for Task 2 (S2) were presented together and were assigned to specific response hands (R1 and R2) located proximal (at the monitor) versus distal (in the lap) to the stimuli. In two experiments, we tested whether stimulus–hand proximity affected the extent of between-task interference (i.e., influence of additional Task 2 processing on primary Task 1 processing). In Experiment 1, results showed that stimulus–hand proximity reduced the amount of between-task interference compared to the distal stimulus–hand condition. Extending these findings, in Experiment 2 a further reduction of between-task interference was obtained when a single hand was located at the monitor instead of two hands. These results are inconsistent with the assumption of a generally increased attentional processing benefit for multiple stimuli within hand space. Instead, these findings speak for a hand-specific processing benefit that supports more separate processing of two tasks. Together these findings demonstrate that stimulus–hand proximity affects the quality of multiple task performance, which is discussed in the context of both, basic and applied cognitive research.

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