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Research suggests that while major life events cause temporary emotional fluctuations, an individual's overall happiness tends to remain stable over time by returning to a baseline level. Consequently, the long-term impact of even dramatic events on happiness is often much less significant than people might expect. This stability is largely due to a process of emotional adaptation. However, certain severe events, like long-term unemployment or major disabilities, can cause lasting changes to one's happiness set point.

Stability of Happiness

Emotional adaptation is the process by which individuals adjust to new emotional circumstances following significant life events, a phenomenon similar to sensory adaptation. Initially, an event triggers an intense emotional reaction, such as a surge of pleasure from a positive event like a marriage proposal or a wave of misery from a negative one like a divorce. Over the long run, however, the emotional impact of the event tends to erode, and the individual's happiness level typically reverts to its original baseline.

Emotional Adaptation to Life Events

A researcher is studying two individuals over two years. In the first year, Person A wins a large sum of money in a lottery, while Person B is involved in an accident that leads to a temporary, but not permanent, disability. Based on findings about emotional baselines, what is the most probable outcome for their self-reported happiness levels at the end of the second year?

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