A specific type of consequentialism is utilitarianism, which says that the consequences that matter are those that affect aggregate well-being.[6] Consequentialism is broader than utilitarianism in that consequentialism can say that the value of outcomes depend on other things than well-being; for example, justice, fairness, and equality,[7] or in that it can say that the value of outcomes depend on well-being but not necessarily aggregate well-being (as it happens, for instance, with prioritarianism, which promotes achieving the higher level of happiness minus suffering but giving priority to the well-being of the worse off).[8] Negative utilitarianism is thus a form of negative consequentialism.[9] Much more has been written explicitly about negative utilitarianism than directly about negative consequentialism, although since negative utilitarianism is a form of negative consequentialism, everything that has been written about negative utilitarianism is by definition about a specific (utilitarian) version of negative consequentialism. Similarly to how there are many variations of consequentialism and negative utilitarianism, there are many versions of negative consequentialism, for example negative prioritarianism and negative consequentialist egalitarianism.[10]