Abstract
Effects of epinephrine and nor-epinephrine on social dominance behavior in 24 male C57BL/6J mice were investigated. The social dominance hierarchy was created by placing pairs of Ss in a linear maze. The only way S could get to the goal box was by pushing the opposing S out. The dominant S pushed the submissive S out of the maze. After the dominance hierarchy was established, each S was placed in the dominance situation under each of the drug conditions, epinephrine and nor-epinephrine. The results showed that all conditions were significantly different from each other, with the greatest amount of dominance behavior being shown under nor-epinephrine and the greatest submissive behavior under epinephrine. It was concluded that epinephrine and nor-epinephrine may have differential effects on social dominance behavior.
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