Science News explains that the participants were assessed according to “which of them, as children, had witnessed domestic violence, experienced mental or physical abuse or neglect, or lived with someone who went to prison, abused drugs or alcohol, or was mentally ill. ”
هذا ما توصل اليه الباحثون في أتلانتا وسان دياڠو بولايتي جورجيا وكاليفورنيا الاميركيتين ،‏ بعدما دققوا في السجلات الطبية لـ‍ ٣٣٧‏,١٧ راشدا .‏