Confusion errors in monkey short-term memory

Mary L. Borkhuis*, Roger T. Davis, Douglas L. Medin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Gave short-term memory tests to 9 highly trained rhesus monkeys in a pattern reproduction paradigm. A red and a white light in a 4 * 4 matrix were illuminated for .20 sec. After a predetermined delay, ss were required to open the door to the cell which previously had been illuminated with a white light. With a constant 5-sec delay, responses to the incorrect red light decreased steadily with practice but remained substantially above chance after 20 days (960 trials) of practice. The pattern of errors with 0-, 2-, and 5-sec delays supports the hypothesis that ss sometimes fail to perceive or encode the red-lighted cells differently from those lighted white. (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)206-211
Number of pages6
JournalJournal of Comparative and Physiological Psychology
Issue number2
StatePublished - Nov 1 1971


  • confusion errors in short-term memory, monkey

ASJC Scopus subject areas

  • Medicine(all)


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