low levels of seretoninare associated with increased level od aggression.
- Deville et al (1997) found that drugs increasing seretonin production lead to reduced levels of aggression, suggesting that low levels of seretonin are linked to increased aggression.
- huber et al (1997) argues that reducing seretonin activity in many species, from crusteceans to humansm increses aggression, further supporting the idea that reduced levels of seretoning reduce aggression.
- Popova et al (1991) found that animals selected for domesticity because of reduced aggression levels had lower seretonin levels that wild, more aggressive counterparts.
Castration lowers testosterone levels and…