ABSTRACT

Childhood head injuries differ from adult head injuries in some significant respects. They occur against a background of ongoing physical and cognitive development. Cognitive capacities often change with time post-injury. But for children changes are affected by two processes of functional plasticity, one concerned with recovery, one with development. The impact of the injury is moderated by age/developmental stage.

In recent years there has been a new focus on the longitudinal comparison of children post-injury with appropriate control groups. Advances in neuropsychological assessment have permitted evaluation with reference to more developmentally suitable norms; expanded definitions of outcome have broadened our understanding of consequences; and neuroimaging techniques have enabled the more precise delineation of injury severity, the study of structure-function outcome relations, and the investigation of reorganization of function.

This special issue offers an overview of cutting-edge approaches to the analysis of childhood head injury.

chapter |7 pages

of functional plasticity. After

chapter |1 pages

of reports of blue words before and af-

1.38, p of each of the three groups who of at least one of the three blue words (which

chapter |1 pages

= .001). Post hoc analyses indicated that the Ortho group differed significantly

= 2.08, p < .03) compared of participants with TBI of group, which was also < .0001. Post hoc analysis using < .0001),

chapter |3 pages

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chapter |2 pages

of the sample, we per-ofWM age percentile, with severity group and frontal

< .005. There were severity effects for task maintenance, < .06, and item maintenance, F(2, 122) < .05, but not

chapter |1 pages

of severe TBI, especially the earlier

chapter |3 pages

of a summary and a lesson statement

chapter |6 pages

of memory deficits in summarizing a story, a test of ver-

of Delis, Kramer,

chapter |2 pages

of injury severity. In addition, even though the

of poorer of age at injury effects (Chapman et aI., 1998; Levin, Song, Ew-

chapter |1 pages

of discourse informa-

chapter |9 pages

of large chunks of informa-

chapter |1 pages

of ongoing cognitive processes such as

chapter |1 pages

= .47), nor interval since in-

chapter X|2 pages

(1, N = 69) =7.19, p < .0 I, or

< .05; the mild and the severe of accuracy of judgment. Items