DOMINANCE-SUBORDINATION RELATIONSHIPS IN COMPETITIVE AVOIDANCE SITUATION IN RATS

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概要

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• The aims of this study were to examine the effects of sex, weight (in Experiment I), and isolation-induced aggression (in Experiment II) upon the dominance-subordination relationships in rats.<BR>Experiment I and It were carried out in the competitive perching box in which the only one member of a pair could avoid the shock.<BR>1) The dominancy score was not related to sex, weight, or isolation-induced aggression.<BR>2) Spearing posture was observed in 70% of male vs. male pairs and in 10% male-female ones.<BR>3) Clear dominance-subordination relationships existed in isolation rats too who were separated from their fellows after the weaning period.<BR>4) The structure of dominance-subordination relationships of eight groups were classified to four types: unstructured type, scapegoat type, dictatorial type and hierarchy type.

• 日本グループ・ダイナミックス学会の論文

著者

• 宮本 正一

  九州大学

• 小川 暢也

  九州大学

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