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Science 10 November 1972:
Vol. 178. no. 4061, pp. 643 - 645
DOI: 10.1126/science.178.4061.643
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Articles

Plasma Testosterone Levels in the Male Rhesus: Influences of Sexual and Social Stimuli

Robert M. Rose 1, Thomas P. Gordon 2, and Irwin S. Bernstein 2

1 Department of Psychosomatic Medicine, Boston University School of Medicine, Boston, Massachusetts 02118
2 Yerkes Regional Primate Research Center, Lawrenceville, Georgia 30245

Four adult male rhesus monkeys were provided access individually to a group of receptive females. Each male assumed dominance and engaged in frequent copulations. Plasma testosterone levels increased two- to threefold during this period. Next, each male was subjected to sudden and decisive defeat by a large all-male group, and plasma testosterone fell following this experience. Two males were later reintroduced to the females, and plasma testosterone rose rapidly to the previous elevated levels.


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