The degree to which item and associative information can be distinguished at retrieval was assessed using a frequency-judgment task. Words were shown various numbers of times individually and as members of word pairs. At test, subjects judged the frequency of the word pairs and a word's frequency as an individual item, its frequency as a member of word pairs, or the combined frequency of the word. Subjects made all of these judgments with considerable accuracy. The frequency of presentations in the nontarget format had consistent, but small, effects on the judgments for the target frequencies. The results provide further support for the distinction between item and associative information and for the source-monitoring framework of Johnson, Hashtroudi, and Lindsay (1993), and they have important implications for global matching models of memory.Item information, the representation ofthe occurrence of a single event, and associative information, the representation ofrelationships between individual items, have been distinguished both empirically and theoretically. Empirically, recent evidence has shown that recognition memory for item and associative information have different time courses at retrieval (Dosher, 1988;Gronlund & Ratcliff, 1989), have different rates offorgetting (Hockley 1991b(Hockley , 1992Murdock & Hockley, 1989), and are differentially affected by natural language word frequency (Clark, 1992;Clark & Burchett, 1994;Clark & Shiffrin, 1992;Hockley, 1994). Recent neurophysiological evidence also supports this distinction and indicates that the hippocampal region plays a fundamental and specialized role in associative learning (Eichenbaum & Bunsey, 1995).From a theoretical perspective, the distinction between item and associative information has been formally instantiated, although in quite different ways, in the family of global matching models. The common assumption within This work was supported by a Natural Sciences and Engineering Research Council of Canada operating grant and a course remission grant from Wilfrid Laurier University to the first author, and an NSERC summer research scholarship awarded to the second author, who is now at the University ofOttawa. We thank Doug Hintzman, Doug Nelson, and Scott Gronlund for many constructive comments on an earlier version of this paper, including suggestions that led to Experiments 5 and 7. We also thank Mike Humphreys for his question at a presentation of a portion of this work at the 1994 meeting of the Psychonomic Society in St. Louis, which led to Experiment 6, and Joanne Bonanno and Sarah Mercer for assistance in data collection. Correspondence can be addressed to W. E. Hockley, Department of Psychology, Wilfrid Laurier University, Waterloo, ON, Canada N2L 3C5 (e-mail: whockley@ mach I.wlu.ca).this class of models is that, at test, the output ofthe model is a familiarity value that represents the global match of the recognition probe (a single item or a pair of items) and the contents ofmemory. Three representatives ofthis family are MINERVA 2 (...