Contrary to previous experiments which found recall with blocked spacing always superior to recall with random" spacings, these experiments found that total recall was a function of two independent factors: (a) category representation, and (b) items per category represented (IPC). Both factors are dependent upon within-category spacing.…

This paper suggests that although there is reasonable evidence to support that portion of the Collins-Quillian theory of semantic memory which hypothesizes that words are ordered hierarchically in memory, there is little evidence in support of their hypothesis of cognitive economy of storage in memory. (Author)

This study investigates proactive inhibition (PI) under conditions of multiple trial free recall (MFTR). The question of theoretical interest concerns the mechanisms of interference that influence response recall per se. (Authors)

Three studies are reported which investigated the role of four variables in semantic generalization: Intentional versus Incidental learning instructions, associative and semantic relationships of the generalization stimuli (GSs) to the critical stimuli (CrSs), and rate of CrS presentation. (Author)