“…documented (e.g., Crowder, 1968;Crowder & Melton, 1965;Greene, 1991;Henson, 1998;Hinrichs, Mewaldt, & Redding, 1973;Jahnke, 1969aJahnke, , 1969bJahnke, , 1970Jahnke, , 1972Jahnke, , 1974Walsh & Schwartz, 1977). In these experiments, participants studied lists of items (usually letters or digits) in which either a single item was repeated (e.g., KLBXDBT) or all items were unique (e.g., KLBXDNT).…”