The influence of locative expressions on context-dependency of endpoint control in aiming |
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Institution: | 1. Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;2. Department of Human Movement Sciences, Faculty of Behavioral and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands |
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Abstract: | It has been claimed that increased reliance on context, or allocentric information, develops when aiming movements are more consciously monitored and/or controlled. Since verbalizing target features requires strong conscious monitoring, we expected an increased reliance on allocentric information when verbalizing a target label (i.e. target number) during movement execution. We examined swiping actions towards a global array of targets embedded in different local array configurations on a tablet under no-verbalization and verbalization conditions. The global and local array configurations allowed separation of contextual-effects from any possible numerical magnitude biases triggered from calling out specific target numbers. The patterns of constant errors in the target direction were used to assess differences between conditions. Variation in the target context configuration systematically biased movement endpoints in both the no-verbalization and verbalization conditions. Ultimately, our results do not support the assertion that calling out target numbers during movement execution increases the context-dependency of targeted actions. |
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Keywords: | Allocentric Egocentric Verbalization SNARC Numerical magnitude Context Aiming Conscious monitoring Conscious control Number-effect |
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