Stimulus similarity and retroactive interference and facilitation in monkey short-term memory

Douglas L. Medin*, Thomas J. Reynolds, John K. Parkinson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Four experiments examined the effects of similarity between the sample and an interpolated stimulus in a modified delayed-matching-to-sample (DMTS) paradigm. Ss were 4 pigtail, 1 cynomolgus, and 2 rhesus monkeys. The basic trial sequence was as follows: (a) A sample was presented, and the response to it was either rewarded or nonrewarded; (b) an interpolated stimulus was presented, and the response to it was either rewarded or nonrewarded; and (c) after a delay interval a choice test was given between the initial sample and a new stimulus, with the sample being correct if it had been initially rewarded and incorrect if it had been initially nonrewarded. When the sample and the interpolated stimulus were associated with opposite outcomes, retroactive interference increased as the similarity of the 2 stimuli increased. When the 2 stimuli were either both rewarded or both nonrewarded, retroactive facilitation was observed so long as the sample and interpolated stimuli were similar along either the relevant or an irrelevent dimension. Test probes involving the interpolated stimulus and a new stimulus revealed asymmetrical interactions such that the interpolated stimulus influenced performance on the initial stimulus more than the initial stimulus altered performance on the interpolated stimulus. (28 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)112-125
Number of pages14
JournalJournal of Experimental Psychology: Animal Behavior Processes
Volume6
Issue number2
DOIs
StatePublished - Apr 1 1980

Keywords

  • facilitation of short term memory in delayed matching-to-sample task, monkeys
  • stimulus similarity, interference &

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Fingerprint Dive into the research topics of 'Stimulus similarity and retroactive interference and facilitation in monkey short-term memory'. Together they form a unique fingerprint.

Cite this