ABSTRACT
It is generally considered that counting is universal; and that except for people with severe learning difficulties, everyone over the age of 6 or 7 will count equally well. Yet there is some evidence for individual differences in counting efficiency even in adults (Deloche et al., 1994; Deloche, Souza, Willadino-Braga, & Dellatolas, 1999; Judd, 1927). It is certainly the case that primary school children can show considerable differences in the speed and accuracy of counting, considerably beyond the age at which counting is generally regarded as automatic (Gray, 1997; Houssart, 2001; Wright, 1994).
