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Related Experiment Videos

Buildup and release from proactive interference in a rhesus monkey.

M Jitsumori1, A A Wright, M R Shyan

  • 1University of Texas Health Science Center, Graduate School of Biomedical Sciences, Houston 77030.

Journal of Experimental Psychology. Animal Behavior Processes
|October 1, 1989
PubMed
Summary
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Proactive interference (PI) in animal memory was studied using a rhesus monkey. The study found PI builds and releases during category changes, primarily affecting short-term memory.

Area of Science:

  • Cognitive Psychology
  • Animal Behavior
  • Primate Cognition

Background:

  • Proactive interference (PI) is a memory phenomenon where prior learning hinders new learning.
  • Understanding PI in animals can shed light on memory mechanisms.
  • Previous studies in humans suggest PI effects are strongest in secondary memory.

Purpose of the Study:

  • To investigate the potential of the proactive interference (PI) technique in studying animal categorization.
  • To examine PI buildup and release in a non-human primate.
  • To determine if PI effects in animals align with findings in human memory studies.

Main Methods:

  • A rhesus monkey was trained on a serial probe recognition task.
  • The task involved memorizing lists of images (flowers or primate faces) and identifying a probe image.

Related Experiment Videos

  • Proactive interference was manipulated by changing categories over consecutive trials.

    • Main Results:

    • Proactive interference (PI) built up over trials within a category and was released upon category change.
    • The first two serial positions showed greater PI buildup and release, suggesting a role for secondary memory.
    • Further experiments confirmed these findings and demonstrated that color was not a critical feature in the task.

    Conclusions:

    • The proactive interference (PI) technique is viable for studying animal categorization and memory.
    • Memory effects in rhesus monkeys, particularly PI, show similarities to human memory processes.
    • These findings support the hypothesis that PI effects are predominantly linked to secondary memory processes in primates.