ABSTRACT
Over the past twenty years, the number of cognitive psychologists, particularly on this side of the Atlantic, who spend at least part of their time conducting case studies of patients who have suffered brain injury has increased quite dramatically. Underlying this upsurge of interest in the effects of brain injury on cognitive performance has been the appreciation that considerable progress can be made in understanding the way in which the cognitive system is organised if one examines the precise nature of the different impairments from which carefully selected patients suffer.
