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Updated: Aug 17, 2026

A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
Published on: July 16, 2015
Capacity limits in list item recognition: evidence from proactive interference
Nelson Cowan1, Troy D Johnson, J Scott Saults
1Department of Psychological Sciences, University of Missouri, 210 McAlester Hall, Columbia, MO 65211, USA. CowanN@missouri.edu
Abstract:
Capacity limits in short-term recall were investigated using proactive interference (PI) from previous lists in a speeded-recognition task. PI was taken to indicate that the target list length surpassed working memory capacity. Unlike previous studies, words were presented either concurrently or sequentially and a new method was introduced to increase the amount of PI. On average, participants retrieved about four items without PI. We suggest an activation-based account of capacity limits.
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