Ethics is the philosophical study of morality and seeks to systematize, defend and recommend concepts of right and wrong conduct. It has three main branches - metaethics examines the nature of moral judgments; normative ethics investigates how one ought to act; and applied ethics examines specific issues. Professional ethics establishes standards for professionals and encompasses honesty, integrity, transparency, accountability, confidentiality, objectivity and respectfulness. Codes of ethics provide guidance to help professionals resolve ethical issues and deter unethical conduct while also educating and building understanding between professionals.