Limits of end-state planning

Frouke Hermens, Daniel Kral, David A Rosenbaum

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)148-162
Number of pages14
JournalActa Psychologica
Volume148
Early online date26 Feb 2014
DOIs
Publication statusPublished - May 2014

Keywords

  • grasping
  • end-state comfort effect
  • arm movements

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    Hermens, F., Kral, D., & Rosenbaum, D. A. (2014). Limits of end-state planning. Acta Psychologica, 148, 148-162. https://doi.org/10.1016/j.actpsy.2014.01.009