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  • Articles  (2)
  • Learning-set formation  (1)
  • Species perception  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Acquisition and transfer of visual Go/No-go discrimination by a chimpanzee (1990)
    Springer
    Primates 31 (1990), S. 439-447 
    Details
    ISSN: 0032-8332
    Keywords: Go/No-go discrimination ; Acquisition ; Transfer ; Learning-set formation ; Repeated use of stimuli ; Chimpanzee
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An adolescent female chimpanzee was trained to press a key in the presence of a computer-graphic geometric figure (“Go” stimulus) within 5 sec and not to press the key during 5-sec presentations of another figure (“No-go” stimulus) with food reinforcement. In the acquisition training, the accuracy of performance increased primarily as a result of learning to inhibit key presses in No-go trials. The chimpanzee acquired this “Go/No-go” visual discrimination task in 1,260 trials. She was then given 14 successive transfer problems. The results for these problems suggested that learning-set formation and repeated use of the same discriminative stimuli both influenced transfer to new problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02381116
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    How laboratory-raised Japanese monkeys (Macaca fuscata) perceive rotated photographs of monkeys: Evidence for an inversion effect in face perception (1994)
    Springer
    Primates 35 (1994), S. 155-165 
    Details
    ISSN: 0032-8332
    Keywords: Sensory reinforcement ; Species perception ; Face perception ; Inversion effect ; Japanese monkeys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Five laboratory-raised Japanese monkeys (Macaca fuscata) were presented various types of photographs of Japanese and rhesus monkeys (Macaca mulatta) in upright, horizontal, and inverted orientations in a sensory-reinforcement experiment. The ratio of the duration of potential viewing time for the photographs which the subjects controlled to the interval between subject-controlled presentations of them (the D/I score) was used as a measure of preference for the photographs. When inverted photographs were presented, the D/I scores were lower than for upright photographs. The difference in D/I scores between photographs of the two species, which indicated discriminability between them, also diminished when the photographs were inverted. The results obtained suggest an inversion effect in face perception in macaque monkeys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02382051
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    Paper (German National Licenses)
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