To appear in Developmental Psychology Numerical Estimation in Preschoolers Ilaria Berteletti 1,2 , Daniela Lucangeli 1,2 , Manuela Piazza 3,4 , Stanislas Dehaene 4 , Marco Zorzi 1,5 1 Center for Cognitive Science, University of Padova, Italy 2 Dipartimento di Psicologia dello Sviluppo e della Socializzazione, University of Padova, Italy 3 Center for Mind/Brain Sciences, University of Trento, Italy 4 Inserm-CEA Cognitive Neuroimaging Unit, France 5 Dipartimento di Psicologia Generale, University of Padova, Italy Running Head: NUMERICAL ESTIMATION IN PRESCHOOLERS Corresponding author: Prof. Marco Zorzi Dipartimento di Psicologia Generale University of Padova via Venezia 8, 35131 Padova (Italy) Email: marco.zorzi@unipd.it Tel: (+39) 049 8276618