Department of Psychiatry, University of Nottingham, Duncan Macmillan House, Porchester Road, Nottingham NG3 6AA, UK. stuart.leask@nottingham.ac.uk
Two large British databases of handedness assessed by writing hand at 10-11 years of age were analysed by geographical region. Left-handedness was found to vary significantly across regions according to one survey but not the other. In both data sets, left-handed writing was significantly more frequent in England than in Scotland and Wales combined. Possible reasons for this difference are discussed.