Complex sentence: They state that rape victims suffer less emotional distress when they are subjected to more violence, and that married women and women of childbearing age experience less psychological distress after a rape than do girls, single women or women who are past menopause.
Split into simpler sentences: They state that rape victims suffer less emotional distress when they are subjected to more violence. They further state that married women and women of childbearing age experience less psychological distress after a rape than do girls, single women or women who are past menopause.