Dr Roz McCarthy. Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, United Kindgom. Email: rm107@cam.ac.uk. Case contribution: PATSy neuropsychology.

Dr. Carmel Lum, Human Communication Research Centre, Division of Informatics, University of Edinburgh Edinburgh, EH8 9LW. Email: carmel@patsy.ac.uk. Project Director.

Dr. Richard Cox, School of Cognitive & Computing Sciences, University of Sussex, Falmer, Brighton BN1 9QH. Email: richard@patsy.ac.uk. Project Director.

Jonathan Kilgour, Human Communication Research Centre, University of Edinburgh. Email: jonathan@patsy.ac.uk. Programming.