(a) Behavioral readout structure. Hierarchical clustering and cross-correlations of the 60 behavioral readouts for n=168 mice. Behavioral readouts tend to cluster based on whether they are independent (related to 1 mouse) or pairwise (derived from the locations of 2 mice). (b) Some behavioral parameters were consistent within individuals over time (for example, contact rate), some parameters could discriminate between individuals (for example, number of chases: F(1,643)=43.7, p=7.8·10-11, time near food or water: F(1,668)=136.9, p=6.7·10-29), while others could discriminate between different times (for example, contact duration F(1,567)=74.9, p=5.1·10-17). Several parameters satisfied both conditions (for example, mean speed: interaction effect is F(1,658)=3.9, p=4.9·10-2, wall-distance: identity effect is F(1,662)=7.5, p=6.3·10-3, day effect is F(1,662)=5.9, p=1.5·10-2 ; ***p<0.001, *p<0.05; all tests were performed on n=168 individuals using a two-way ANOVA. In the box plots, boxes represent the 25%, 50% (median) and 75% quantiles and whiskers span from minima to maxima.).