Study: Marijuana Use Inversely Associated With Domestic Violence
http://www.hightimes.com/read/study-marijuana-use-inversely-associated-domestic-violence
"The use of alcohol significantly increases one’s likelihood of becoming either a perpetrator or a victim of a violent act, including acts of intimate partner violence.
As for cannabis use -- that’s a different story.
In fact, according to a just-published study in the journal Psychology and Addictive Behaviors, couples who use pot are particularly unlikely to engage in intimate partner violence."
http://www.ncbi.nlm.nih.gov/pubmed/25134048