Final answer:
The key to the Golden Rule is impartiality, aligning with Kant's Categorical Imperative and the universal nature of ethical behavior that emphasizes treating others as one would like to be treated.
Step-by-step explanation:
The key to the Golden Rule is often considered to be impartiality. This principle is about treating others as one would like to be treated oneself, which is a concept shared by various major religions and philosophies throughout history. Kant's Categorical Imperative offers a similar notion, suggesting that one should act according to the maxim that they would wish all other rational people to follow, almost like a universal law. Also, Carol Gilligan thought that earlier researchers into morality had overlooked sympathetic reactions to moral situations. Furthermore, altruism is a form of prosocial behavior motivated by a selfless concern for the well-being of others, without expecting personal gain.
Impartiality aligns with the notion that one should act without bias and without considering the benefit to oneself, thereby representing a more universal approach to ethical behavior that encompasses the essence of the Golden Rule.