Social cognitive factors in brain injury-associated personality change.

Often social difficulties are the most enduring difficulties after a head injury. The social deficits most frequently reported by relatives 6-12 months post-injury include egocentric styles of social interaction characterized by family members as a change in the head-injured patient's personality style. The described characteristics of head-injured patients in terms of social perspective-taking abilities are similar to those of children reported in the cognitive developmental literature. To demonstrate the nature of the social deficits in head-injured participants, social perspective-taking paradigms in the development literature were used to construct a task to be administered to both head-injured and non-head-injured adults. Results of the comparison between the two groups suggest deficits in social perspective-taking abilities in head-injured adults similar to the level demonstrated by pre-adolescent children.