Grey parrots (Psittacus erithacus) do not acquire referential English labels when tutored with videotapes displayed on CRT screens if (a) socially isolated, (b) reward for attempted labels is possible, (c) trainers direct birds’ attention to the monitor, (d) live video feed avoids habituation or (d) one trainer repeats labels produced on video and rewards label attempts. Because birds learned referential labels from live tutor pairs in concurrent sessions, we concluded that video failed because input lacked live social interaction and modeling (Pepperberg, 1999). Recent studies (e.g. Ikebuchi & Okanoya, 1999), however, suggest that standard CRT monitor flickering could instead have prevented learning. Using an LCD monitor, we found that eliminating flickering did not enable birds to learn from video under conditions of limited social interaction. Results emphasize the role of social interaction in referential label learning and may generalize to other systems (e.g. disabled children, or possibly software and robotic agents).
Baciadonna, Luigi, Francesca M. Cornero, Nathan J. Emery & Nicola S. Clayton
2021. Convergent evolution of complex cognition: Insights from the field of avian cognition into the study of self-awareness. Learning & Behavior 49:1 ► pp. 9 ff.
Croney, Candace C. & Ruth C. Newberry
2007. Group size and cognitive processes. Applied Animal Behaviour Science 103:3-4 ► pp. 215 ff.
Giret, Nicolas, Franck Péron, Jitka Lindová, Lenka Tichotová, Laurent Nagle, Michel Kreutzer, František Tymr & Dalila Bovet
2010. Referential learning of French and Czech labels in African grey parrots (Psittacus erithacus): Different methods yield contrasting results. Behavioural Processes 85:2 ► pp. 90 ff.
Kleinberger, Rebecca, Jennifer Cunha, Megha M Vemuri & Ilyena Hirskyj-Douglas
2023. Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems, ► pp. 1 ff.
Lindová, Jitka
2016. Who Do Parrots Talk To? Agreeableness and a Serious Approach Increase the Production of Word-like Utterances by African Grey Parrots. Human-animal interaction bulletin 2016
Pepperberg, I.M.
2006. Communication in Grey Parrots. In Encyclopedia of Language & Linguistics, ► pp. 642 ff.
Pepperberg, I.M.
2010. Alex: A Study in Avian Cognition. In Encyclopedia of Animal Behavior, ► pp. 44 ff.
Pepperberg, Irene M, Jennifer Vicinay & Patrick Cavanagh
2008. Processing of the Müller-Lyer Illusion by a Grey Parrot (Psittacus Erithacus). Perception 37:5 ► pp. 765 ff.
Pepperberg, Irene M.
2004. ?Insightful? string-pulling in Grey parrots (Psittacus erithacus) is affected by vocal competence. Animal Cognition 7:4 ► pp. 263 ff.
Pepperberg, Irene M.
2006. Grey parrot (Psittacus erithacus) numerical abilities: Addition and further experiments on a zero-like concept.. Journal of Comparative Psychology 120:1 ► pp. 1 ff.
Pepperberg, Irene M.
2006. Cognitive and communicative abilities of Grey parrots. Applied Animal Behaviour Science 100:1-2 ► pp. 77 ff.
Pepperberg, Irene M.
2006. Ordinality and inferential abilities of a grey parrot (Psittacus erithacus).. Journal of Comparative Psychology 120:3 ► pp. 205 ff.
Pepperberg, Irene M.
2007. Grey parrots do not always ‘parrot’: the roles of imitation and phonological awareness in the creation of new labels from existing vocalizations. Language Sciences 29:1 ► pp. 1 ff.
Pepperberg, Irene M.
2007. Individual differences in grey parrots (Psittacus erithacus): effects of training. Journal of Ornithology 148:S2 ► pp. 161 ff.
Pepperberg, Irene M.
2007. Emergence of Linguistic Communication: Studies on Grey Parrots. In Emergence of Communication and Language, ► pp. 355 ff.
Pepperberg, Irene M.
2010. Vocal learning in Grey parrots: A brief review of perception, production, and cross-species comparisons. Brain and Language 115:1 ► pp. 81 ff.
Pepperberg, Irene M.
2012. Further evidence for addition and numerical competence by a Grey parrot (Psittacus erithacus). Animal Cognition 15:4 ► pp. 711 ff.
Pepperberg, Irene M.
2020. Human–Grey Parrot Comparisons in Cognitive Performance. In The Cambridge Handbook of Evolutionary Perspectives on Human Behavior, ► pp. 3 ff.
Pepperberg, Irene M.
2021. A Review of the Model/Rival (M/R) Technique for Training Interspecies Communication and Its Use in Behavioral Research. Animals 11:9 ► pp. 2479 ff.
Pepperberg, Irene M. & Susan Carey
2012. Grey parrot number acquisition: The inference of cardinal value from ordinal position on the numeral list. Cognition 125:2 ► pp. 219 ff.
Pepperberg, Irene M. & Jesse D. Gordon
2005. Number Comprehension by a Grey Parrot (Psittacus erithacus), Including a Zero-Like Concept.. Journal of Comparative Psychology 119:2 ► pp. 197 ff.
Pepperberg, Irene M. & Ken Nakayama
2016. Robust representation of shape in a Grey parrot (Psittacus erithacus). Cognition 153 ► pp. 146 ff.
Péron, Franck, Maria John, Stephanie Sapowicz, Dalila Bovet & Irene M. Pepperberg
2013. A study of sharing and reciprocity in grey parrots (Psittacus erithacus). Animal Cognition 16:2 ► pp. 197 ff.
Péron, Franck, Luke Thornberg, Brya Gross, Suzanne Gray & Irene M. Pepperberg
2014. Human–Grey parrot (Psittacus erithacus) reciprocity: a follow-up study. Animal Cognition 17:4 ► pp. 937 ff.
This list is based on CrossRef data as of 25 september 2023. Please note that it may not be complete. Sources presented here have been supplied by the respective publishers.
Any errors therein should be reported to them.