Putting Two and Two Together: Declines in Arithmetic Fluency among Young Canadian Adults, 1993 to 2005 Jo-Anne LeFevre (jo-anne.lefevre@carleton.ca) Marcie Penner-Wilger (mpennerw@uwo.ca) Aryn A. Pyke (apyke@andrew.cmu.ed) Tina Shanahan, and Wendy Ann Deslauriers Institute of Cognitive Science and Department of Psychology Carleton University, Ottawa, ON K1S 5B6 Carleton University Cognitive Science Technical Report 2014-01 cogscitechreports@carleton.ca Institute of Cognitive Science 2201 Dunton Tower Carleton University 1125 Colonel By Drive Ottawa, Ontario, K1S 5B6 Canada 1