How have historians tended to treat typically male tendencies versus typically female tendencies, according to nel noddings in the article "maternal ethics"? historians value female tendencies more highly because it is childbearing and childrearing that enable the group to survive male tendencies, like mathematics, warfare, and even singing have been prized more highly by historians historians have generally paid equal regard to both kinds of tendency. historians value female tendencies more highly because most historians have themselves been female?