Discrimination of isolation peep variants by squirrel monkeys

D. Symmes, J. D. Newman

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Responses to variant forms of the isolation peep have been studied by behavioral techniques in a group of eight squirrel monkeys. Discrimination learning with variant pairs using shock avoidance methods was surprisingly fast, and equivalence testing without differential reward revealed that variant forms are spontaneously discriminated by captive squirrel monkeys. Evidence was obtained that features occurring in the first third of the isolation peep are more effectively utilized in choice behavior than features occurring in the last third. It is postulated that such features are part of a communicative system in this species.

Original languageEnglish (US)
Pages (from-to)365-376
Number of pages12
JournalExperimental Brain Research
Issue number4
StatePublished - Feb 1974
Externally publishedYes


  • Discrimination behavior
  • Saimiri sciureus
  • Vocal communication

ASJC Scopus subject areas

  • General Neuroscience


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