Answer:
Very simply, it can affect it severely. Emotion, as once put by a wise race, is like a wild beast that must be subdued to prevent irrational behavior. It can have a massive impact on the mind, and extremely strong emotion can even affect a person physically.
Anger can make someone act out of rage and commit murder, or it can cause a necessary revolution to better a population's living conditions.
Joy can be passed on and spread, but can be shot down in moments. It really does all depend on how a person uses their emotion that gauges how much it really affects them, sociologically speaking that is.