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Academic Journal

Reply to Jaakkola (2014): "Do Animals Understand Invisible Displacement? A Critical Review".

  • Source: Journal of Comparative Psychology. May2015, Vol. 129 Issue 2, p198-201. 4p.

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Ordinality and Inferential Abilities of a Grey Parrot (Psittacus erithacus).

  • Source: Journal of Comparative Psychology. Aug2006, Vol. 120 Issue 3, p205-216. 12p.

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Simultaneous Development of Vocal and Physical Object Combinations by a Grey Parrot (Psittacus erithacus): Bottle Caps, Lids, and Labels.

  • Source: Journal of Comparative Psychology. Dec2001, Vol. 115 Issue 4, p376. 9p. 2 Black and White Photographs, 2 Diagrams, 5 Charts.

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Vocal Learning in the Grey Parrot (Psittacus erithacus): Effects of Species Identity and Number...

  • Source: Journal of Comparative Psychology. Dec2000, Vol. 114 Issue 4, p371. 10p. 2 Charts.

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Evidence for a Form of Mutual Exclusivity During Label Acquisition by Grey Parrots (Psittacus...

  • Source: Journal of Comparative Psychology. Sep2000, Vol. 114 Issue 3, p219. 13p. 1 Chart, 7 Graphs.

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Development of Piagetian object permanence in a grey parrot (Psittacus erithacus).

  • Source: Journal of Comparative Psychology. Mar97, Vol. 111 Issue 1, p63. 13p. 1 Chart.

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Limited contextual vocal learning in the grey parrot (Psittacus erithacus): The effect of...

  • Source: Journal of Comparative Psychology. Jun99, Vol. 113 Issue 2, p158. 15p. 2 Charts, 3 Graphs.

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Numerical competence in an African gray parrot (Psittacus erithacus).

  • Source: Journal of Comparative Psychology. Mar94, Vol. 108 Issue 1, p36. 9p. 1 Chart.

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