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John, E. R., Chesler, P., Bartlett, F., & Victor, I. (1968). Observation Learning in Cats. Science, 159(3822), 1489–1491.
Abstract: In two experiments cats acquired a stimulus-controlled approach or avoidance response by observational or conventional shaping procedures. Observer cats acquired the avoidance response (hurdle jumping in response to a buzzer stimulus) significantly faster and made fewer errors than cats that were conventionally trained. Observer cats acquired the approach response (lever pressing for food in response to a light stimulus) with significantly fewer errors than cats that were conventionally trained. In some cases, observer cats committed one or no errors while reaching criterion.
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Zeeb K,. (1968). Paarungsverhalten von Rind und Pferd im Herdenverband. Z Tierzüchtung Züchtungsbiol, 84, 229–235.
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Klingel, H. (1968). Sozial Organisation und Verhaltensweisen von Hartmann- und Bergzebras (Equus zebra hartmannae und E. z. zebra). Z. Tierpsychol., 25, 76–88.
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Klingel H,. (1968). Die Immobilisation von Steppenzebras. Zoolog Garten, 35, 54–66.
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