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  • Hen  (1)
  • Key words Cognition  (1)
  • RADIOACTIVITY Ag^1^1^7 Cd^1^1^7 deduced branching ratios  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Domestic hens have declarative representations (2000)
    Springer
    Animal cognition 3 (2000), S. 135-137 
    Details
    ISSN: 1435-9456
    Keywords: Key words Cognition ; Chicken ; Hen ; Declarative ¶representation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract It is generally considered that information can be stored either as a procedural or as a declarative representation. A devaluation technique was used to determine whether hens have declarative representations. Individual hens (Gallus gallus domesticus) were fed in an enclosure with two containers, each with a new food type. One of the food types was devalued by pre-feeding with that food, after which the hens were tested with empty food containers. The pre-feeding should only affect the choice of the hens if they have learned where a particular food type was (declarative representation) rather than “go left when coming into the enclosure” (procedural representation). A significant proportion of the hens went to the location previously occupied by the non-devalued food (seven out of eight). This supports the hypothesis that domestic hens can form declarative representations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100710000074
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Low-energy photofission of U^2^3^8
    Amsterdam : Elsevier
    Nuclear Physics 64 (1965), S. 420-432 
    Details
    ISSN: 0029-5582
    Keywords: NUCLEAR FISSION U^2^3^8(γ f) E ~ 5.9-6.6 MeV measured yields Cd^1^1^7 ; RADIOACTIVITY Ag^1^1^7 Cd^1^1^7 deduced branching ratios
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0029-5582(65)90568-7
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    Paper (German National Licenses)
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