ABSTRACT
The conservatism of the EEG record for indicating the possibility of brain injury is illustrated by the following case: at the age of three months the child had encephalitis. Minor fits had their onset shortly after the child’s recovery. A subsequent neurological examination suggested that the boy was brain-damaged, a diagnosis confirmed by A.E.G. The EEG record, however, showed no neurological abnormality.The final index of the existence of possible brain injury has been taken from two sources: the existence of a history of an event (as defined above) likely to be associated with brain injury; and the indication of brain injury from the EEG record.1 As was seen in Table 17, there is a good agreement between these two indicators of brain damage, so that in the large majority of cases where the historical data are positive the EEG data will be positive also.The verbal-performance discrepancy (and other I.Q. test data) was not considered in making the judgments about the existence of brain injury. However, a number of writers (e.g. Halton, 1966) have stressed that a large difference between verbal and performance I.Q. 1 Cf. the use by Pond (1965) of multiple indicators of brain damage (historical data; physical signs; A.E.G.; E.E.G.) in a study of psychiatric disorder in brain-damaged children: ‘ . . . the commonest causes of brain damage in the child psychiatric population are the events around the time of birth, whether by anoxia or by physical damage with forceps, etc.*
0-4 21 04 9 0*65-9 15 0-7 6 0-2610-14 11 0-92 13 04815-19 3 0-96 12 0-6920-4 1 10 11 0-8825-9 0 1-0 4 0-9530+ 0 10 3 10Totals 51 58 Test details not available in nine cases.
