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  • Title: Age-sex differences in the expression of agonistic behavior in rhesus monkey (Macaca mulatta) groups.
    Author: Bernstein IS, Ehardt CL.
    Journal: J Comp Psychol; 1985 Jun; 99(2):115-32. PubMed ID: 4040001.
    Abstract:
    Both age and sex influence rhesus monkey agonistic behavior. In intragroup episodes, submission was most frequent in juveniles, but aggression increased steadily with age, albeit much more sharply in females. As infants, males were more often involved in agonistic behavior than were females, but this sex difference reversed with age. A notable change in the frequency and forms of agonistic expression occurred in adolescent males. By the time they became adults, their participation in agonistic episodes was silent and brief and rarely involved biting. Adolescent males received high frequencies of aggressive responses, and this is hypothesized to account for the marked shift in adult male patterns of participation in intragroup agonistic interactions, as relative to females whose basic pattern of agonistic expression does not change with age.
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