How vertical elevation affects self-other integration as measured by the joint Simon effect

Acta Psychologica, vol. 220, pp. 103404

Abstract

Earlier findings suggest that positions of power decrease self-other integration and increase psychological distance to others. Until now, however, evidence for this relation rests exclusively on subjective measures. The current research instead employed a vertical joint Simon task to measure self-other integration. This task assesses the extent to which people represent their own actions in reference to their co-actor's, also referred to as the joint Simon effect. Building on cultural associations between power and vertical elevation, we manipulated whether participants were in an elevated (high-power) or lower (low-power) seating position. Experiments 1a and 1b reanalyzed existing datasets and found that elevated (vs. lower) seating position decreased the joint Simon effect, consistent with predictions. Experiment 2 provides a high-powered replication of this finding. Yet, further analyses revealed that feelings of power - measured as a manipulation check and indeed demonstrating that the manipulation was successful - did not mediate or moderate the effect of seating position on the joint Simon effect. Therefore, it is possible that the effect of seating elevation was driven through other aspects of that manipulation than feelings of power. We discuss these and suggest ways to test these alternative explanations.

Authors 5

1. Anouk van der Weiden Aachen

   Leiden University

   Affiliation as printed

   Leiden University, Netherlands

2. Dirkje Maria Aleida Pril

   University of Cologne

   Affiliation as printed

   University of Cologne, Germany

3. Kerstin Dittrich

   Federal University of Applied Administrative Sciences

   Affiliation as printed

   Federal University of Applied Administrative Sciences, Germany

4. Jasmin Richter

   University of Oslo

   Affiliation as printed

   University of Oslo, Norway

5. Joris Lammers corresponding

   University of Cologne

   Affiliation as printed

   University of Cologne, Germany. Electronic address: joris.lammers@uni-koeln.de

   University of Cologne, Germany