About the authors

Dr Brian Butterworth is a Professor of Cognitive Neuropsychology at University College London and founding editor of the academic journal, Mathematical Cognition.  He taught at Cambridge and has held visiting appointments at the universities of Melbourne, Padua and Trieste, MIT and the Max Planck Institute at Nijmegen. He is the UK’s leading authority on dyscalculia and is currently working with colleagues in many countries on the neuropsychology and the genetics of mathematical abilities.

Acknowledgements

I am grateful to Dr Manuela Piazza for help in developing the Dyscalculia Screener. Anna Bevan co-wrote the ‘summary of research leading to the definition of dyscalculia specific to this screener’ section and interviewed children and teachers about the consequences of mathematics disabilities. Jo Winters and her colleagues in the London Borough of Harrow Education Authority and Fairley House School provided an invaluable opportunity to evaluate the approach taken here. I thank the Department for Education Skills SEN Small Grants Programme for supporting some of the research reported here. Dr Lindsay Peer CBE of the British Dyslexia Association provided encouragement and guidance. I would also like to thank Nick Nelson (CFAS, University of Manchester) and Cres Fernandes (GL Assessment) for their contributions to the standardisation.
Brian Butterworth

The publishers would also like to thank Di Hillage of the British Dyslexia Association Computer Committee, Jeff Hughes; Shirley Walliss; Lesley Hodges from Longdendale Community Language College; Sarah Wedderburn from Unicorn Maths; and Barbara Yandell from The Dyslexia Association.