The relationship between emotionality and dominance in the hooded rat.

Hooded rodents were tested in an emotionality condition and two competitive "dominance" conditions. It was found that stable rankings of subjects within the test groups could be established for each of the three conditions. Significant negative correlations were also found between a subject's "emotionality" ranked in a group and his ranking in the group in relation to either condition of competitive dominance, while a significant positive correlation was found between a subject's ranking in both of the competitive dominance conditions. These data are taken as evidence for a debilitating effect of high emotionality on one's success in competition.