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Constrained postures and spatial S–R compatibility as measured by the Simon effect

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Abstract

Whereas working under constrained postures is known to influence the worker’s perceived comfort and health, little is known in regard to its influence on performance. Employing an Auditory Simon task while varying posture, we investigated the relationship between constrained postures and cognitive processes in three experiments. In Experiment 1 and 2, participants operated a rocker switch or a control knob with one hand either in front or in the back of their body and while either sitting or kneeling. Perceived musculoskeletal exertion was gathered with a questionnaire. Results of the first two experiments showed differently perceived comfort and a minor effect of constrained posture on cognitive performance. However, results indicated that spatial coding in the back compares to either a virtual turn of the observer towards the control device (front-device coding) or along the observer’s hand (effector coding). To clarify this issue the rocker switch was operated with one or two hands in Experiment 3, showing a comparable coding only in the one-hand condition and indicating evidence for the effector-coding hypothesis in the back.

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Notes

  1. Note that this research can be related to the field of level II perspective taking. See Kessler and Thomson (2010) and Moll and Meltzoff (2011) for an elaboration on the topic and Janczyk (2013) for evidence of costs of mental self-rotation.

  2. Note that Simon (1968, as cited in Simon, 1990) as well as Heister, Ehrenstein and Schroeder-Heister (1987) demonstrated the existence of the Simon effect with two fingers of one hand. More recent evidence comes from a study by Cho and Proctor (2010).

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Acknowledgments

We would like to thank Markus Janczyk, Robert Proctor, and Bernhard Hommel for their valuable and constructive comments on an earlier version of the manuscript. Correspondence concerning this article should be addressed to either author at the Institute of Psychology, RWTH Aachen University. Email: kreutzfeldt@ or muesseler@psych.rwth-aachen.de.

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Correspondence to Magali Kreutzfeldt.

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Kreutzfeldt, M., Leisten, M. & Müsseler, J. Constrained postures and spatial S–R compatibility as measured by the Simon effect. Psychological Research 79, 658–668 (2015). https://doi.org/10.1007/s00426-014-0601-5

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