Interference of action perception on action production increases across the adult life-span Stephanie Wermelinger a , Anja Gampe a , Jannis Behr a , and Moritz M. Daum a,b a Department of Psychology, University of Zurich; Binzmuehlestrasse 14, 8050 Zurich, Switzerland b Neuroscience Center Zurich, University of Zurich and ETH Zurich, Switzerland Correspondence concerning this article should be addressed to Stephanie Wermelinger, Department of Psychology, University of Zurich, Switzerland E-Mail: s.wermelinger@psychologie.uzh.ch Accepted for publication in Experimental Brain Research (13 th December 2017) Word count: 7’727 (inclusive references) Acknowledgements During the work on her dissertation, Stephanie Wermelinger was a pre-doctoral fellow of the International Max Planck Research School on the Life Course (LIFE, www.imprs- life.mpg.de; participating institutions: Max Planck Institute for Human Development, Freie Universität Berlin, Humboldt-Universität zu Berlin, University of Michigan, University of Virginia, University of Zurich). This project is funded by the Swiss National Science Foundation (grant number: S-63216-03- 01).