Jealousy is an emotion experienced by one who perceives that another person is giving something that s/he wants or feels is due to them (often attention, love, respect or affection) to an alternate. For example, a child will likely become jealous when their parents give sweets to a sibling but not to them. An adult may become jealous if they observe that their lover is flirting with someone else, perceiving a threat to their relationship. While the child's jealousy might be assuaged if they received candy from their parents as well, the jealous lover desires that the affections of their lover be directed exclusively to themselves and would not be assuaged by an equal share of attention.
Some authorities (e.g., Rawls, A Theory of Justice, 1971) distinguish between jealousy and envy on the ground that jealousy involves the wish to keep what one has, and envy the wish to get what one does not have. (Thus, the child is jealous of her parents' attention to a sibling, but envious of her friend's new bicycle.) This is problematic in that, e.g., a teenager may be jealous of the affection a rock star bestows on his fiancée, even though the teenager neither has nor thinks she has that affection herself. Others suggest that the key difference between envy and jealousy is the involvement of a third party: it is not merely that the jealous person wishes to have the attention for himself, or that the third party who is getting it would not get it, but rather that he wishes the person of whom he is jealous would not give that attention to a third party. Some even claim a distinction between jealousy and envy insofar as while envy is the carnal desire to possess something that is not yours, jealousy is the righteous feeling that one has towards that which is rightly his (such as a spouse's fidelity).
Another common distinction between jealousy and envy is that envy is the desire for something in general (one envies a friend's new bike), whereas jealousy is the desire to have something in particular, and to take it from someone else (one is jealous of a friend's girlfriend).
For this kind of reason, some have suggested that jealousy most centrally concerns one's perception of oneself. (Jeffrie Murphy, William Pennell Rock). The perception that a person whose evaluation matters a great deal to us prefers someone else can make us doubt our own worth.
Some authorities (e.g., Rawls, A Theory of Justice, 1971) distinguish between jealousy and envy on the ground that jealousy involves the wish to keep what one has, and envy the wish to get what one does not have. (Thus, the child is jealous of her parents' attention to a sibling, but envious of her friend's new bicycle.) This is problematic in that, e.g., a teenager may be jealous of the affection a rock star bestows on his fiancée, even though the teenager neither has nor thinks she has that affection herself. Others suggest that the key difference between envy and jealousy is the involvement of a third party: it is not merely that the jealous person wishes to have the attention for himself, or that the third party who is getting it would not get it, but rather that he wishes the person of whom he is jealous would not give that attention to a third party. Some even claim a distinction between jealousy and envy insofar as while envy is the carnal desire to possess something that is not yours, jealousy is the righteous feeling that one has towards that which is rightly his (such as a spouse's fidelity).
Another common distinction between jealousy and envy is that envy is the desire for something in general (one envies a friend's new bike), whereas jealousy is the desire to have something in particular, and to take it from someone else (one is jealous of a friend's girlfriend).
For this kind of reason, some have suggested that jealousy most centrally concerns one's perception of oneself. (Jeffrie Murphy, William Pennell Rock). The perception that a person whose evaluation matters a great deal to us prefers someone else can make us doubt our own worth.

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