title: Authors' reply to McMinn and colleagues and Caan.
authors.affiliation: Behaviour and Health Research Unit, University of Cambridge, Cambridge CB2 0SR, UK.
authors.forename: Theresa M
authors.initials: TM
authors.lastname: Marteau
authors.forename: Peter A
authors.initials: PA
authors.lastname: Hall
mesh_terms: D001921:Brain / Q000254:growth & development*; D056344:Executive Function; D006801:Humans; D011203:Poverty / Q000706:statistics & numerical data*