A stimulus-sampling model of recognition memory is presented that predicts both proactive and retroactive interference. To test the predictions of the model, a recognition memory experiment was carried out using a standard proactive-retroactive design with a forced-choice task. Both accuracy and latency were measured. The data showed, as predicted, equal proactive and retroactive effects on accuracy, providing solid support for the model. The interference effects are interpreted in terms of the model as arising from an increase in indirect marking, the marking of shared stimulus elements in words other than the study word. The model has two parameters representing the rate of indirect marking for high-frequency and low-frequency words and two parameters reflecting the efficiency of direct marking. The latency results completely paralleled the accuracy findings, showing proactive and retroactive effects. A possible extension of the model to handle latencies is considered.On an intuitive level, there is considerable agreement among recognition theorists on the source of interference effects in recognition memory. While it is couched in different language, the fundamental concept proposed is a single one: Interference arises ou t of overlapping elements in study-list and test-list items. Underwood and his associates (e.g., Underwood & Freund, 1970) propose that study items elicit implicit associational responses. Such responses result from elements of the study items shared with other items. Shepard (1961), in his trace model of recognition, postulates that there is some probability of diffusion of trace elements from presented stimuli to other related stimuli. Bower's (1972) stimulus-sampling model of the recognition process has a parameter that represents the amount of overlap between stimulus elements of old and new items. Glanzer and Bowles (1976) use an indirect marking parameter to refer to the tagging of overlapping elements in unpresented stimuli in their stimulussampling model of recognition.Models such as these provide the means to identify the locus of interference effects by offering mechanisms of the underlying memory processes. In particular, the This article is based on a dissertation submitted to New York University in partial fulfillment of the requirements for the PhD degree. The authors wish to thank Doris Aaronson, Jean-Claude Falmagne, Richard Koppenaal, and Joan Gay Snodgrass for their helpful comments and criticism of the original manuscript. During the time the research was carried out, Nancy L. Bowles received support from NIMH Training Grant IT32 MHI4267-02. Additional support for the research was from NIMH Grant R MH32799-01 to Murray Glanzer. Requests for reprints should be submitted to Nancy L. Bowles, who is now at the Geriatric Research, Educational and Clinical Center, VA Outpatient Clinic, 17 Court Street, Boston, Massachusetts 02108.Glanzer and Bowles (1976) model makes strong predictions concerning interference effects. It will be presented here in detail.
A MODEL FOR INTERFERENCE...