File:American Journal of Psychology (Volume 21) Fig 23.jpg
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DescriptionAmerican Journal of Psychology (Volume 21) Fig 23.jpg |
English: Young Crow 1 shown opening the door by pulling String C in Place 5. The Old Crow was induced later to work in this place, but did so in his own way. The Young Crow was fed from the hand just before each test and as a rule made no attempts to open the box. |
Date | |
Source | https://en.wikisource.org/wiki/Page:American_Journal_of_Psychology_Volume_21.djvu/74 |
Author | Editor G. Stanley Hall |
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Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:American_Journal_of_Psychology_(Volume_21)_Fig_23.jpg |
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current | 17:48, 3 August 2021 | 1,441 × 1,019 (1.18 MB) | Sp1nd01 (talk | contribs) | Uploaded a work by Editor G. Stanley Hall from https://en.wikisource.org/wiki/Page:American_Journal_of_Psychology_Volume_21.djvu/74 with UploadWizard |
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File change date and time | 18:46, 3 August 2021 |
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1910
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2f2037c536629b6a7228fdfc3fb3bf19fed457d3
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1,441 pixel
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