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Object permanence in four species of psittacine birds: An African Grey parrot (Psittacus erithacus), an Illiger mini macaw (Ara maracana), a parakeet (Melopsittacus undulatus), and a cockatiel (Nymphicus hollandicus)

Autor: Erich Willems Do, 07.01.2021 - 19:07;
TitelObject permanence in four species of psittacine birds: An African Grey parrot (Psittacus erithacus), an Illiger mini macaw (Ara maracana), a parakeet (Melopsittacus undulatus), and a cockatiel (Nymphicus hollandicus)
MedientypJournal Article
Jahr der Veröffentlichung1990
AutorenPepperberg, I., and M. Funk
Volume18
Seitennummerierung97 - 108
Veröffentlichungsdatum1990/03/01
Zusammenfassung

Four psittacids—an African Grey parrot, an Illiger macaw, a cockatiel, and a parakeet—were tested on object-permanence tasks that are commonly used to assess levels of understanding in human infants during their first 2 years. These birds showed Stage 6 competence, demonstrating that object permanence is not limited to mammals. The results for these birds were comparable to those of an African Grey parrot that had been trained in interspecies communication prior to object-permanence testing. Our findings thus suggest that although language-like behavior provides a communication channel that facilitates testing, such language training is unlikely to affect the outcome of the tests.
Es spielt keine Rolle, wie schön deine Theorie ist. Es spielt keine Rolle, wie klug du bist. Passt sie nicht zu den experimentellen Ergebnissen/Beobachtungen, dann ist sie falsch!'. {nach Richard Feynman, Nobelpreis für Physik 1965}