This is her story of Alex, a remarkable animal, clearly possessed of great personality, intelligence, even a sense of humor. Pepperberg endured years, decades of ridicule, scorn, resistance and a continuing challenge in attempting to find funding to persist with her work. Pepperberg began doing research on the cognitive capacities of a Gray parrot, Alex, in the 1970s, a time when animals were widely believed to be little more than bio-automatons, lacking not only intellectual capability, but emotions as well. Zeitschrift für Tierpsychology, 39, 178–188.Ms. Social learning of vocal patterns and models of their application in Grey parrots. Journal of Comparative Psychology, 127, 272–281. Reasoning by inference: Further studies on exclusion in Grey parrots ( Psittacus erithacus). M., Koepke, A., Livingston, P., Girard, M., & Hartsfield, L. Evidence for a form of mutual exclusivity during label acquisition by Grey parrots ( Psittacus erithacus)? Journal of Comparative Psychology, 114, 219–231. Teaching and Learning in Medicine, 12, 213–220. Proposed use of two-part interactive modeling as a means to increase functional skills in children with a variety of disabilities. Robust representation of shape by a Grey parrot ( Psittacus erithacus). Do Grey parrots ( Psittacus erithacus) succeed on a “complex” foraging task failed by primates but solved by fish? Journal of Comparative Psychology, 128, 298–306. Grey parrot number acquisition: The inference of cardinal value from ordinal position on the numeral list. Journal of Comparative Psychology, 105, 286–294. Relational learning by an African Grey parrot ( Psittacus erithacus): Discriminations based on relative size. Zentall (Eds.), APA handbook of comparative psychology. Koepke (Eds.), Evolutionary origins and early development of basic number processing (pp. Numerical concepts: Grey parrot capacities. Perkel (Eds.), Brain & language, 115, 81–91, special issue. Vocal learning in Grey parrots: A brief review of perception, production, and cross-species comparisons. Grey parrots do not always ‘parrot’: Phonological awareness and the creation of new labels from existing vocalizations.
Acquisition of the same/different concept by an African Grey parrot ( Psittacus erithacus): Learning with respect to categories of color, shape, and material. Journal of Comparative Psychology, 129, 339–346. Delayed gratification: A Grey parrot ( Psittacus erithacus) will wait for a better reward.
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