Table 1.

Subject characteristics

Designator	Etiology	Age	Yrs of Educ	WAIS-R	WMS-R
A1	Allergic reaction to contrast agent, causing extended period of status epilepticus	54	9	90	54
A2	Removal of third-ventricle tumor with surgical complications	50	18	103	56
A3	Rupture and surgical repair of anterior communicating artery aneurysm	53	18	131	66
A4	Rupture and surgical repair of anterior communicating artery aneurysm	45	12	81	50
C1	—	53	13	102	105
C2	—	50	16	110	102
C3	—	57	16	118	113
C4	—	45	12	100	100

Note. Patients and matched controls have analogous designators. Etiology = cause of amnesia in patients. Yrs of Educ = total education in years. WAIS-R = intelligence, measured by Weschler Adult Intelligence Scale-Revised. WMS-R = delayed memory, measured by Weschler Memory Scale-Revised.