familiarity with its content. These judgments were
to be made using a 5-point scale, ranging from no
previous exposure to the statement or its equivalent
(0) to more than five previous exposures (4). Each
symbol intervening between 0 and 4 was given a
specific definition in terms of specific types of prior
exposure to equivalent or partly similar statements.
An equivalent statement was denned as "one identical
in meaning, though not necessarily using the same
words, as the one you are judging.