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Author  |
McClearn, G.E. | ||||
| Title | Behavioral genetics | Type | Journal Article | ||
| Year | 1971 | Publication | Behavioral Science | Abbreviated Journal | Behav Sci |
| Volume | 16 | Issue | 1 | Pages | 64-81 |
| Keywords | Amino Acid Metabolism, Inborn Errors; Animals; Aptitude; Behavior, Animal; Chromosome Aberrations; Cognition; Cytogenetics; Female; *Genetics, Behavioral; Genetics, Population; Humans; Intelligence; Mental Retardation; Mice; Models, Biological; Personality; Phenylketonurias; Pregnancy; Research; Schizophrenia; Sex Chromosome Aberrations; Twins | ||||
| Abstract | |||||
| Address | |||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Editor | |||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0005-7940 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:5105941 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4150 | ||
| Permanent link to this record | |||||
| Author |
Pepperberg, I.M.; Brezinsky, M.V. | ||||
| Title | Acquisition of a relative class concept by an African gray parrot (Psittacus erithacus): discriminations based on relative size | Type | Journal Article | ||
| Year | 1991 | Publication | Journal of Comparative Psychology | Abbreviated Journal | J Comp Psychol |
| Volume | 105 | Issue | 3 | Pages | 286-294 |
| Keywords | Animals; Aptitude; *Concept Formation; *Discrimination Learning; Form Perception; Male; Mental Recall; *Parrots; *Size Perception; Vocalization, Animal | ||||
| Abstract | We report that an African gray parrot (Psittacus erithacus), Alex, responds to stimuli on a relative basis. Previous laboratory studies with artificial stimuli (such as pure tones) suggest that birds make relational responses as a secondary strategy, only after they have acquired information about the absolute values of the stimuli. Alex, however, after learning to respond to a small set of exemplars on the basis of relative size, transferred this behavior to novel situations that did not provide specific information about the absolute values of the stimuli. He responded to vocal questions about which was the larger or smaller exemplar by vocally labeling its color or material, and he responded “none” if the exemplars did not differ in size. His overall accuracy was 78.7%. | ||||
| Address | Northwestern University | ||||
| Corporate Author | Thesis | ||||
| Publisher | Place of Publication | Washington, D.C. : 1983 | Editor | ||
| Language | English | Summary Language | Original Title | ||
| Series Editor | Series Title | Abbreviated Series Title | |||
| Series Volume | Series Issue | Edition | |||
| ISSN | 0735-7036 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:1935007 | Approved | yes | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3610 | ||
| Permanent link to this record | |||||