Limits of end-state planning

Hermens, Frouke, Kral, Daniel and Rosenbaum, David A. (2014) Limits of end-state planning. Acta psychologica, 148 . pp. 148-162. ISSN 0001-6918

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Limits of end-state planning

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The end-state comfort effect is the tendency to use an uncomfortable initial grasp posture for object manipulation if this leads to a comfortable final posture. Many studies have replicated the end-state comfort effect across a range of tasks and conditions. However, these tasks had in common that they involved relatively simple movements, such as picking up a dowel or sliding a pan from one place to another. Here we asked whether the end-state comfort effect extends to more complex tasks. We asked participants to grasp a transparent bowl and move the bowl to an instructed location, positioning it in an instructed orientation. We either found an initial-state comfort effect or equal degrees of comfort for end-grasps and start-grasps depending on task instructions. The end-state comfort effect was not consistently observed. The results suggest that the end-state comfort effect may be restricted to relatively simple grasping movements.

Keywords:Arm movements, End-state comfort effect, Grasping, NotOAChecked
Subjects:C Biological Sciences > C830 Experimental Psychology
Divisions:College of Social Science > School of Psychology
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ID Code:16365
Deposited On:07 Jan 2015 15:27

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