Maple, T., Erwin, J., Mitchell, G. 1973. Short- and long-term attachments in adult heterosexual pairs of rhesus monkeys. Paper presented at the annual meeting of the Western Psychological Association held in Anaheim, California.
When the members of four heterosexual pairs were separated, all four males bit themselves while attempting to remove the separating barrier or while threatening observers. [quoted in Erwin et al., 1973]
Year
1973