A Social Network Approach Reveals Associations between Mouse Social Dominance and Brain Gene Expression.

We found that when considering fighting and chasing matrices separately or when considering all aggressive acts together that all hierarchies had highly significant steepness (p<0.0003; Table 1 ) For each behavior matrix, we also calculated individual measures of dominance—David's Scores and the I&SI rank order of individuals (see Methods ).

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Of note, the grooming network’s reciprocity showed a trend (p = 0.062) to be significantly higher than expected by chance compared to random networks of the same size and density.

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