Changes in Mastery and Self-efficacy During a Quit Attempt 1 Running head: Changes in Mastery and Self-efficacy During a Quit Attempt Day-to-day mastery and self-efficacy changes during a smoking quit attempt: Two studies Lisa M. Warner 1,2 , Gertraud Stadler 3 , Janina Lüscher 4 , Nina Knoll 1 , Sibylle Ochsner 4 , Rainer Hornung 4 , Urte Scholz 4 1 Freie Universität Berlin, Germany 2 MSB Medical School Berlin, Germany 3 University of Aberdeen, United Kingdom 4 University of Zurich, Switzerland Word count (exc. figures/tables): 5050 *Requests for reprints should be addressed to Prof. Dr. Urte Scholz Postal address: University of Zurich, Binzmühlestrasse 14 Box 14, CH-8050 Zürich, Switzerland Email: urte.scholz@psychologie.uzh.ch