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1. an inner moral sense that distinguishes right acts from wrong. Difficulties arise in how the conscience decides between good and bad. Conscience is not always an adequate justification for action.
2. the internalization of parental and social norms, related to the Freudian concept of superego; this conception of conscience has no role in ethical deliberation.
3. in bioethics, the exercise and expression of a reflective sense of integrity, constitutive of reflection about the relationship between a specific course of action and a particular idea of the self and one's integrity. Appeals to conscience presume a prior decision about the rightness or wrongness of an act. Justification is adequate if it is based on universalizable principles; if justification is founded on religious beliefs, personal ideas, or a particular way of life, others cannot be held to them.
a. An awareness of morality in regard to one's behavior; a sense of right and wrong that urges one to act morally: Let your conscience be your guide.
b. A source of moral or ethical judgment or pronouncement: a document that serves as the nation's conscience.
c. Conformity to one's own sense of right conduct: a person of unflagging conscience.
2. The part of the superego in psychoanalysis that judges the ethical nature of one's actions and thoughts and then transmits such determinations to the ego for consideration.