Table 1.

Social behavior phenotype means by non-aggressive and aggressive subpopulations.

Social behavior phenotype	Type	F2	Non-aggression mean (± s.e.)	Aggression mean (± s.e.)
bidirectional	count	4.43 (± 0.39)	5.58 (± 0.48)	2.50 (± 0.49)***
	% duration	3.01 (± 0.31)	3.97 (± 0.42)	1.75 (± 0.33)***
unidirectional	count	10.55 (± 0.74)	12.88 (± 0.91)	6.32 (± 0.96)***
	% duration	13.86 (± 1.44)	17.27 (± 2.10)	9.38 (± 1.65)**
approach	count	5.47 (± 0.53)	7.80 (± 0.73)	2.39 (± 0.41) ***
	% duration	1.83 (± 0.21)	2.59 (± 0.31)	0.84 (± 0.14)***
affiliative	count	19.93 (± 1.37)	26.56 (± 1.51)	11.21 (± 1.64)***
	% duration	18.71 (± 1.59)	23.83 (± 2.14)	11.97 (± 1.91)***
passive avoidance	passive count	3.24 (± 0.42)	4.72 (± 0.59)	1.29 (± 0.23)***
	% duration	3.96 (± 0.64)	5.46 (± 0.81)	1.99 (± 0.94)**
active avoidance	active count	1.97 (± 0.25)	2.24 (± 0.35)	1.61 (± 0.36)
	% duration	1.12 (± 0.19)	1.28 (± 0.27)	0.91 (± 0.26)
freezing	count	0.32 (± 0.09)	0.44 (± 0.15)	0.16 (± 0.09)
	% duration	0.32 (± 0.12)	0.46 (± 0.20)	0.13 (± 0.08)
aggression	count	5.42 (± 0.82)	0.00 (± 0.00)	12.55 (± 1.12)na
	% duration	10.73 (± 1.56)	0.00 (± 0.00)	24.85 (± 1.96)na
aversive	count	10.94 (± 0.82)	7.40 (± 0.87)	15.61 (± 1.13)***
	% duration	16.13 (± 1.51)	7.19 (± 0.99)	27.88 (± 2.02)***
total social	count	30.87 (± 1.20)	33.96 (1.62)	26.82 (± 1.55)**
	% duration	34.84 (± 1.53)	31.02 (± 1.95)	39.86 (± 2.23)**
attack		17.07 (± 2.83)	0.00 (± 0.00)	39.53 (± 4.41)na
attack latency		368.18 (± 26.10)	600.00 (± 0.00)	126.58 (± 18.98)na

Superscripts *, ** and *** indicate t-test (uncorrected for multiple testing) p-values < 0.05, < 0.01 and < than 0.001, respectively. Independent sample t-tests were not performed for aggression counts and aggression duration.

Note - nonaggressive mice are defined as mice that did not perform any aggressive behavior acts defined in Table 7.