Abstract

This chapter details three sources of normative moral disagreement and surveys 11 approaches to understanding its implications for normative ethics. Section 2 explains how normative moral disagreement can emerge from first-order commonsense moral disagreement, second-order metaethical disagreement over moral concepts and methods of ethics, and third-order metaphilosophical disagreement over the merits of different philosophical methods. Section 3 then details how moral disagreement has been argued to support either moral error theory (Section 3.1), moral skepticism (Section 3.2), moral relativism (Section 3.3), common moral foundations beneath areas of disagreement (Section 3.4), empirical approaches to ethics (Section 3.5), considerations of peer-disagreement (Section 3.6), convergence of moral frameworks (Section 3.7), moral compromise (Section 3.8), moral pluralism (Section 3.9), moral pragmatism (Section 3.10), or metaphilosophical examination of the epistemic merits of different philosophical methods (Section 3.11).