Two experiments were carried out to show that the constancy of Type II d' in recall is not an artifact, but is due to finite-state processes as suggested by Bembach (1967). The following conclusions were reached: (1)The constancy of Type II d' is not an artifact due to the inclusion of intralist intrusions in the class of incorrect responses; (2)backward learning curves constructed from confidence ratings gave clear evidence of all-or-none recall; (3)recall appeared to be all or none whether the subjects leamed by rote or with a mnemonic; (4) the discriminability index derived from Luce's (1959) choice theory did not exhibit constancy over trials, unlike Type II d' and despite the fact that backward rating curves indicated all-or-none processes.