“…Caution is warranted in evaluating the evidence that the activity of a memory, not its age, is the primary determinant of its vulnerability. While a number of independent laboratories have replicated the finding of amnesia for old reactivated memories (Davis & Hirtzel, 1970;DeVietti & Holliday, 1972;Gerson & Henderson, 1978;Misanin et aI., 1968;Robbins & Meyer, 1970;Schneider & Sherman, 1968), many negative findings have also been obtained (Banker, Hunt, & Pagano, 1969;Dawson & McGaugh, 1969;Gold & King, 1972;Jamieson & Albert, 1970;Weaver & Geoffrey, 1969). The one clinical adaptation of this paradigm (Squire, Slater, & Chance, 1976) also reported no detectable amnesia for an old reactivated memory following electroconvulsive therapy (ECT) , although amnesia is a common sequela for learning shortly prior to ECT (Cronholm & Lagergren, 1959;Zubin & Barrera, 1941).…”