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animal dominance

the relationship between nonhuman animals that allows some individuals to have greater access to resources (e.g., food, shelter, mates) than others in the group. Dominance ranks are thought to be linear in some cases, with a clear ordering from most to least dominant (see pecking order), but may also be dependent (i.e., based on kin or age relationships) or governed by coalitions in which subordinate individuals acting together can outrank dominant ones. Although dominance is usually thought to be based on aggression, stable dominance relationships may be maintained through the use of animal vocalizations or visual communication, with minimal aggression.

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Psychology term of the day

December 18th 2024

isoniazid

isoniazid

n. a drug of choice for the treatment of tuberculosis. Use of the drug can cause a form of neuritis by blocking the function of pyridoxine (vitamin B6) in metabolizing glutamic acid to form the neurotransmitter gamma-aminobutyric acid. Isoniazid is structurally related to a known monoamine oxidase inhibitor (MAOI), iproniazid, and was reputed to have some antidepressant activity, although it is not clinically used in this role and is not an MAOI. Also called isonicotinic acid hydrazide (INH).