The kinds of interpersonal violence that women are exposed to tend to be in domestic situations, by, unfortunately, parents or other family members, and they tend not to be one-shot deals.
This perspective makes sense if you simplify the workings of a complex brain, exposing it to an array of electrical pulses; cells in plants also communicate through electrical signals.
In an experiment that exposed healthy volunteers to a cold or flu virus, researchers found that people with a generally sunny disposition were less likely to fall ill.