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Grzimek, B. (1968). On the Psychology of the Horse. Man and Animal: Studies in Behavior, , 37–46.
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Kummer, H. (1968). Social Organisation of Hamadryas Baboons.
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Meddock, T., & Osborn, D. (1968). Neophobia in wild and laboratory mice. Psychol Sci, 12.
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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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