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Table 2 Resident–intruder agonistic interactions. Behavioral parameters are grouped in three categories: Quality of contact, aggressive behaviors, and other behavioral responses. Only the significant statistical effects are shown (p values; ANOVAs with repeated measures) to highlight the effects of intruder’s genetic background (within-subject factor: C3H versus balb/c) and resident’s genotype (between-subject factor: mdx versus WT). The direction of the genotype differences is indicated in brackets

From: Altered social behavior and ultrasonic communication in the dystrophin-deficient mdx mouse model of Duchenne muscular dystrophy

Behavioral responses Effect of intruder’s genetic background Effect of resident’s genotype Intruder × resident interaction
Quality of contact    
 Orofacial (n) p < 0.001 (C3H > balb)
 Orofacial (duration, s) p < 0.001 (C3H > balb)
 Orogenital (n)
 Orogenital (duration, s)
 Other (n)
 Other (duration, s)
Aggressive behaviors    
 Pursuits (n) p < 0.05 (C3H > balb)
 Pursuits (duration, s)
 Resident dominant acts (n) p = 0.01 (C3H > balb)
 Resident dominant acts (duration, s) p < 0.001 (C3H > balb)
 Intruder dominant acts (n) P < 0.05
 Intruder dominant acts (duration, s) p = 0.09, NS
Other behavioral responses    
 Rearings (n) p < 0.05 (mdx < WT)
 Rearings (duration, s) P < 0.05 (mdx < WT)
 Freezing during interaction (n) p < 0.001 (C3H > balb) P < 0.05 (mdx > WT)
 Freezing during interaction (duration, s) p < 0.001 (C3H > balb) P < 0.05 (mdx > WT) P < 0.05
 Freezing apart from interaction (n) p < 0.05 (C3H > balb)
 Freezing apart from interaction (duration, s)