Must overlearned lists be scanned?

Ss were presented given names as test items and asked either to indicate whether each test name was a member of a previously memorized list of names or whether each test name was the name of one of their siblings. The data indicated that the memorized hst of names was scanned in a serial fashion but that (disregarding the case where S had just one sibling) S did not have to scan the list of his own siblings' names to decide about a test name.