The Clinical Neuropsychologists 1999, Vol. 13, No. 2, pp. The internal consistency and the diagnostic value of a test for apraxia in patients having had a stroke are presented. The diagnostic value is expressed by means of the sensitivity and specificity and the predictive value of the test. The test also has high predictive value. The ROC curves illustrate that the test is sufficiently discriminative to allow a differentiation between persons with apraxia and persons without apraxia.
Factors contributing to both increased and reduced risk are detailed.
The role of neuropsychological assessment in research and clinical management is reviewed. Existing studies of concussion incurred during contact sports provide evidence of an important role for neuropsychology in assessment and management of mild head injuries. Issues in clinical assessment of concussion are reviewed. The importance of grading of concussions, monitoring of postconcussive symptom resolution, and the use of neuropsychological test results in return to play decisions is detailed. The Second Impact Syndrome is discussed with regard to return to play decisions.