title: Reply.
authors.affiliation: Department of Psychology, University of British Columbia, Vancouver, BC, Canada.
authors.forename: Kenneth D
authors.initials: KD
authors.lastname: Craig
authors.affiliation: Research Department of Clinical, Educational and Health Psychology, University College London, London, WC1E 6BT, United Kingdom.
authors.forename: Amanda C
authors.initials: AC
authors.lastname: de C Williams