Nelson (1971) Critical Manipulation If participants forgot “ 38 -dress” and “ 77 -scissors” then participants relearned either same pairs or changed pairs 25% “forgot” Relearned Results Same 38 -dress 77 -scissors 38 -dress 77 scissors 78% Changed 38 -dress 77 -scissors 38 -apple 77 -kettle 43% The better performance of participants in the same condition indicate that there was some memory left for “forgotten” items.