Instruction and load effects in mental arithmetic Instruction and load effects on high-skill and low-skill individuals: A study in the domain of mental arithmetic Ineke Imbo & André Vandierendonck Ghent University, Belgium Running head: Instruction and load effects in mental arithmetic Correspondence Address: Ineke Imbo Department of Experimental Psychology Ghent University Henri Dunantlaan 2 B – 9000 Ghent Belgium Tel: +32 (0)9 2646409 Fax: + 32 (0)9 2646496 E-mail: Ineke.Imbo@UGent.be 1