MJN110 does not affect non-aggressive social behavior in male or female rats. Male and female rats were exposed to post-weaning social isolation (PSI) or social rearing (SR) for 4 weeks, then were injected with either 0 mg/kg (vehicle), 1 mg/kg, or 5 mg/kg MJN110. Two hr later rats were exposed to a novel same-sex rat for 15 min. All social interactions were recorded, and aggressive social interaction was subtracted from this total. There was more non-aggressive social behavior in females than males (p < 0.05), and more non-aggressive social behavior in PSI rats than SR rats (p < 0.01). Data are means ± SEMs.