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The behavioral effects of d-amphetamine were studied in a group of stumptail macaques in a large outdoor enclosure. d-Amphetamine altered characteristic patterns of aggressive and affiliative behaviors in adult males that received the drug. Each monkey that received d-amphetamine increased its aggression toward non-adult animals in the group and decreased aggression toward adult members. In subjects for which genealogy was known, d-amphetamine increased aggression toward kin-related members of the group and decreased aggression toward non-kin monkeys. The effects of the drug on affiliative behaviors were less uniform and, therefore, less conclusive. Three subjects decreased affiliation and two increased affiliation toward non-adult monkeys. The results demonstrate that d-amphetamine can alter substantially the behavior of drug-treated members of a group and, in addition, that the drug can indirectly affect specific subsets of the group even though they did not receive the drug.
E O Smith, and
L D Byrd
January 1982,
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E O Smith, and
L D Byrd
May 1978,
Life sciences,
E O Smith, and
L D Byrd
October 1977,
Pharmacology, biochemistry, and behavior,
E O Smith, and
L D Byrd
August 1982,
The American journal of psychiatry,
E O Smith, and
L D Byrd
July 1972,
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E O Smith, and
L D Byrd
January 1976,
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E O Smith, and
L D Byrd
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E O Smith, and
L D Byrd
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Pharmacology, biochemistry, and behavior,
E O Smith, and
L D Byrd
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E O Smith, and
L D Byrd
December 2011,
Experimental and clinical psychopharmacology,
